Hair treatment tool

Abstract

To provide a hair treatment tool that can reduce the force required during use and allows hair to be grasped with a sensation similar to pinching with fingers.SOLUTION: A hair treatment tool comprises a pair of holding pieces 10, 20, which comprises: tip parts 11, 21 located on one side in the longitudinal direction of the hair treatment tool 1 and configured to hold hair; base end parts 12, 22 on the other side at which the pieces are joined to each other; and non-joined parts 13, 23 closer to the tip parts 11, 21 than the base end parts 12, 22. Bent parts 14, 24 are formed in the non-joined parts 13, 23 at a position closer to the tip parts 11, 21 than to the base end parts 12, 22, so that the dimension in the width direction is gradually increased from the base end parts 12, 22 to the bent parts 14, 24, and the dimension in the width direction is gradually reduced from the bent parts 14, 24 to the tip parts 11, 21.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a hair treatment tool configured for hair pulling or hair cutting.

Background Art

[0002] Conventionally, as shown in Non-Patent Documents 1 and 2, there is a hair puller configured by processing a metal plate to form a pair of clamping pieces, with the end on the side that sandwiches the hair of each clamping piece being the tip end, and the opposite end being the base end, and joining the pair of clamping pieces at the base end.

[0003] In the hair puller of Non-Patent Document 1, a predetermined length in the longitudinal direction of the pair of clamping pieces is the base end, that is, the joining portion, and the tip end side from the base end is the non-joining portion. Each clamping piece is configured to have the same width from the base end to near the central position in the longitudinal direction of each clamping piece in the non-joining portion, and has a shape in which the width becomes narrower from near the central position toward the tip end. Also, in the non-joining portion, the interval between the pair of clamping pieces gradually widens from the base end toward the tip end, and the clamping pieces are bent near the tip end to be brought closer together. Each clamping piece is bent near the tip end, that is, at a location where the width gradually becomes narrower.

[0004] Also, in the hair puller of Non-Patent Document 2, a predetermined length in the longitudinal direction of the pair of clamping pieces is the base end, that is, the joining portion, and the tip end side from the base end is the non-joining portion. Each clamping piece is wider near the central position in the longitudinal direction of each clamping piece in the base end and the non-joining portion, and is constricted in width between these, and the width gradually becomes narrower from near the central position in the longitudinal direction of the non-joining portion toward the tip end, and the tip is sharpened. In the non-joining portion, the interval between the pair of clamping pieces gradually widens from the base end toward the tip end, and after being bent near the central position to make the widening gentler, the clamping pieces are further bent at a location where the width gradually becomes narrower near the tip end to be brought closer together.

[0005] Also, as shown in Non-Patent Document 3, there are tweezers in which a pair of clamping pieces are formed three-dimensionally using a mold, the end of each clamping piece that clamps the hair is the tip end, and the opposite end is the base end, and the pair of clamping pieces are joined at the base end. In these tweezers, a certain length of the pair of clamping pieces in the longitudinal direction is the base end, i.e., the joint, and the tip side from the base end is the non-jointed part. The non-jointed part is made thin near the base end, and is made thick on the tip side. The pair of clamping pieces are tapered toward the tip side, and the tapered part is curved, narrowing the gap between them. The tip is rounded. [Prior art documents] [Non-patent literature]

[0006] [Non-Patent Document 1] Kai Corporation, Seki Magoroku, beveled tweezers, with storage case, Internet <https: / / www.amazon.co.jp / %E8%B2%9D%E5%8D%B0-KAI-4901601268928-%E9%96%A2%E5%AD%AB%E5%85%AD-%E6%AF%9B%E6%8A%9C%E3%81%8D / dp / B00AH8K01Y> [Non-Patent Document 2] Fujiwa Sangyo, Eyebrow Tweezers, Made in Japan, Artisan Tadafune, Precision Tweezers, Mayubijin Ultra Fine, Internet <https: / / www.amazon.co.jp / %E7%9C%89%E6%AF%9B%E6%8A%9C%E3%81%8D-%E3%83%94%E3%83%B3%E3%82%BB%E3%83%83%E3%83%88-%E6%97%A5%E6%9C%AC%E8%A3%BD-%E5%BF%A0%E8%88%9F%E4%BD%9C-%E3%81%BE%E3%82%86%E7%BE%8E%E4%BA%BA%E6%A5%B5%E7%B4%B0 / dp / B0B6B7VHKC> [Non-Patent Document 3] Kai Corporation, Round-tipped Hair Remover, Internet <https: / / www.kai-group.com / store / products / detail / 9078>

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, if the base end is thick like the hair removers of Non-Patent Documents 1 and 2, a strong force is required to deform the pair of clamping pieces. In particular, a stronger force is required to increase the force for clamping the hair at the tip, and the fingers are likely to get tired when processing a large number of hairs. Further, in the hair removers of Non-Patent Documents 1 to 3, since the tip-side portion is tapered and has a structure that is bent or curved, the portion where force is applied by pressing with a finger during use is far from the tip, and the hair cannot be clamped with a feeling of pinching with a finger.

[0008] An object of the present disclosure is to provide a hair treatment tool that can reduce the force required during use and can clamp the hair with a feeling of pinching with a finger.

Means for Solving the Problems

[0009] A first aspect of the present disclosure has a longitudinal direction, with one end on one side of the longitudinal direction being a tip portion (11, 21) that sandwiches hair, and the other end on the other side of the longitudinal direction being a base end portion (12, 22). The base end portions are joined to each other, and a portion on the tip side of the base end portion is a non-joined portion (13, 23). The hair treatment tool is configured by a pair of sandwiching side pieces (10, 20). The hair treatment is performed by plucking or cutting the hair sandwiched at the tip portion. The pair of sandwiching pieces are both composed of a metal plate, and have bent portions (14, 24) that are bent between the tip portion and the base end portion. The distance between them gradually increases from the base end portion to the bent portion, and gradually decreases from the bent portion to the tip portion. And, taking the direction in which the pair of sandwiching pieces are arranged and the direction orthogonal to the longitudinal direction as the width direction, the dimension in the width direction gradually increases from the base end portion to the bent portion, and gradually decreases from the bent portion to the tip portion. The bent portion is formed at a position closer to the tip portion than the base end portion.

[0010] In this way, the dimension in the width direction gradually increases from the base end portion to the bent portion, and gradually decreases from the bent portion to the tip portion. And the bent portion is arranged closer to the tip portion.

[0011] When the bent portion is arranged closer to the tip portion, the portion pressed by the finger among the non-joined portions will be arranged closer to the tip portion. For this reason, when performing hair treatment, the finger can be in a state closer to the tip portion. Therefore, it becomes possible to perform hair treatment with a feeling of pinching the hair with the finger. Regarding hair treatment, there are cases where it is not only performed while checking the target location with a mirror, but also cases where it is desired to perform it by groping for the hair without using a mirror. In that case, it is easier to perform hair treatment when the finger is in a state closer to the tip portion.

[0012] Furthermore, when the bent portion is arranged closer to the tip portion, with respect to the longitudinal direction, for the angle θ1 formed by the portion from the bent portion to the tip portion and the angle θ2 formed by the portion from the bent portion to the base portion among the non-jointed portions, the angle θ1 > the angle θ2. And when performing hair treatment, the greater the angle θ1, the stronger the force for pinching the hair when the same force is applied. In addition, the greater the angle θ1, the greater the distance between the portions pushed by the finger among the pair of holding pieces can be made. Therefore, while preventing the non-jointed portion from being excessively bent, a margin for bending can be left, making it easier to apply more force after pinching the hair. Also, the greater the angle θ1, the easier it is for the finger force to act as it is as the force for pinching the hair. For this reason, during hair treatment, by pinching the hair more strongly, it is possible to make the hair less slippery, perform hair treatment more accurately, and since hair treatment can be performed with a relatively small force, even when performing a large number of hair treatments, the finger can be made less fatigued. Therefore, regardless of age or gender, the hair treatment tool can be made easy to use for the user. Also, since the tip portion side is tapered compared to the bent portion, when using the hair treatment tool by placing the finger on the base end portion side rather than the bent portion of the non-jointed portion, the hair to be treated is less likely to be hidden, so the hair to be treated is easier to see and easier to treat.

[0013] Also, in a hair treatment tool for hair removal or hair cutting, during use, the pair of holding pieces can pinch the hair at the tip portion with the non-jointed portion where they are separated from each other being bent, but the position closest to the base end portion among the non-jointed portions is mainly bent. For this reason, weakening the spring force at the position closest to the base end portion among the non-jointed portions can weaken the force required during hair treatment.

[0014] On the other hand, for the portion of the non-joined part that is pressed by a finger during use, it is easier to press if the width dimension is increased. Also, if the dimension in the width direction of the non-joined part is gradually increased from the base end part toward the bent part, it is possible to make the base end part side of the non-joined part bend while making the bent part side less likely to bend. If the non-joined part bends excessively over a wide range in the longitudinal direction, the positions of both tip ends of the pair of holding pieces may not match. However, by restricting the main bending location of the non-joined part to the base end part side, excessive bending of the non-joined part can be suppressed, and the positions of both tip ends of the pair of holding pieces can be accurately matched.

[0015] In the hair treatment tool according to the second aspect of the present disclosure, in the longitudinal direction, D1 / D2, which is the ratio of the distance D1 from the tip end part to the bent part and the distance D2 from the base end part to the bent part, is set to be 1 / 4 or more and 1 / 7 or less. By setting D1 / D2 to be 1 / 4 or more and 1 / 7 or less in this way, the bent part can be arranged closer to the tip end part, and effects such as being able to perform hair treatment with a feeling of more strongly pinching the hair with a finger and being able to more strongly pinch the hair during hair treatment are more easily obtained.

[0016] In the hair treatment tool according to the third aspect of the present disclosure, W1 / W2, which is the ratio of the dimension W1 in the width direction of the bent part and the dimension W2 in the width direction of the most base end part side among the non-joined parts, is set to be 4 / 3 or more and 3 or less. By setting W1 / W2 to be 4 / 3 or more and 3 or less in this way, it is possible to make the width of the bent part easy to press while making the most base end part side of the non-joined part narrow and easy to bend.

[0017] In the hair treatment tool according to the fourth aspect of the present disclosure, the pair of holding pieces are tapered in the width direction from the bent part toward the tip end part and the tip ends are rounded, and have flat surfaces (11a, 21a) facing each other at the tip end part, and are used for hair plucking by sandwiching and pulling out the hair with the flat surfaces. By rounding the tip ends in this way, it is possible to prevent the tip ends from damaging the skin even if they touch the skin around the hair.

[0018] In the hair treatment tool according to the fifth aspect of the present disclosure, the pair of clamping pieces are shaped such that the dimension in the width direction decreases from the bent portion toward the tip portion, and the tip portion is linear along the width direction. The tip portions of each of the pair of clamping pieces are formed as sharp hair-cutting portions (11b, 21b) in a direction approaching the tip portion of the other of the pair of clamping pieces. The hair-cutting is performed by sandwiching the hair with the hair-cutting portions and bringing the hair-cutting portions into line contact. In this way, by making the tip portion linear and making the tip portions of each of the pair of clamping pieces sharp in the direction approaching the tip portion of the other, when a force is applied until the tip portions come into line contact while sandwiching the hair with the sharp tip portions, the hair can be accurately cut.

[0019] Note that the reference numerals in parentheses attached to each component etc. indicate an example of the correspondence relationship between the component etc. and the specific components etc. described in the embodiments described later.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

[0021] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In addition, including the other embodiments described below, in each embodiment, parts that are the same or equivalent to each other are denoted by the same reference numerals and will be described.

[0022] (First Embodiment) With reference to FIGS. 1 to 4, the hair treatment tool 1 according to the first embodiment will be described. The hair treatment tool 1 is a tool for performing hair treatments such as hair removal and hair cutting. In this embodiment, the hair treatment tool 1 used for hair removal will be described.

[0023] 〔Configuration of Hair Treatment Tool 1〕 The hair treatment tool 1 shown in FIG. 1 is configured to have a pair of clamping pieces 10 and 20. One end of the pair of clamping pieces 10 and 20 is joined, and the other end is open. Hereinafter, the one located above the paper surface of FIG. 1 among the pair of clamping pieces 10 and 20 is referred to as the first clamping piece 10, and the one located below the paper surface is referred to as the second clamping piece 20.

[0024] The first clamping piece 10 and the second clamping piece 20 have, with the left - right direction of the paper surface in FIGS. 2 and 3 as the longitudinal direction, the tip portions 11 and 21 for clamping hair at one end on the longitudinal direction side, and the base end portions 12 and 22 at the other end. Both the first clamping piece 10 and the second clamping piece 20 are made of a metal plate. The constituent material of the first clamping piece 10 and the second clamping piece 20 is arbitrary. For example, stainless steel is used as the constituent material. And, for example, by performing metal processing such as laser processing or press processing on a single metal flat plate, the first clamping piece 10 and the second clamping piece 20 are formed. Regarding the thickness of the first clamping piece 10 and the second clamping piece 20, it is arbitrary. However, although the rigidity increases as the thickness increases, the force required during use also increases. Therefore, for example, the thickness is 2 mm or less, preferably 1 mm.

[0025] The first clamping piece 10 and the second clamping piece 20 are arranged facing each other, and are integrated by being joined to each other with the base end portions 12 and 22 as the joining portions. The joining form at the base end portions 12 and 22 is arbitrary. For example, the first clamping piece 10 and the second clamping piece 20 are joined by spot welding at two locations along the longitudinal direction. In the case of local joining such as spot welding, not the entire regions of the base end portions 12 and 22 are joined, but only a part thereof is joined, and the surrounding areas are simply in a state where the first clamping piece 10 and the second clamping piece 20 are in contact with each other. Therefore, the portions of the first clamping piece 10 and the second clamping piece 20 that are in contact with each other and at least a part of which is joined are referred to as the base end portions 12 and 22.

[0026] In the first clamping piece 10 and the second clamping piece 20, the portions on the tip end portions 11 and 21 side rather than the base end portions 12 and 22 are non-joining portions 13 and 23. In the non-joining portions 13 and 23, the first clamping piece 10 and the second clamping piece 20 are arranged with a gap provided therebetween. That is, the first clamping piece 10 and the second clamping piece 20 are separated from each other starting from the boundary positions between the base end portions 12 and 22 and the non-joining portions 13 and 23, in other words, the portions of the non-joining portions 13 and 23 closest to the base end portions 12 and 22, and a gap is provided. Here, at the boundary positions between the base end portions 12 and 22 and the non-joining portions 13 and 23, the first clamping piece 10 and the second clamping piece 20 are bent in a direction in which they separate from each other, but they may be curved.

[0027] Further, the first clamping piece 10 and the second clamping piece 20 are provided with bent portions 14 and 24 having a V-shaped shape when the hair treatment tool 1 is viewed from the side as shown in FIG. 3 in the non-joining portions 13 and 23, and the tip end portions 11 and 21 side are bent in a direction approaching each other. For this reason, the first clamping piece 10 and the second clamping piece 20 are shaped such that the gap between them gradually widens from the base end portions 12 and 22 to the bent portions 14 and 24, and the distance between them gradually narrows from the bent portions 14 and 24 to the tip end portions 11 and 21.

[0028] Here, as indicated by the dashed-dotted line in FIG. 3, a line that passes through the center position in the direction in which the first clamping piece 10 and the second clamping piece 20 are arranged and passes through the center position in the width direction, which will be described later, as indicated by the dashed-dotted line in FIG. 2, and that extends along the longitudinal direction of the hair treatment tool 1 is referred to as the center line C1. Regarding the sizes of the respective non-joint portions 13 and 23 along this center line C1, the distance D1 from the most distal end to the bent portions 14 and 24 among the distal ends 11 and 21 is smaller than the distance D2 from the bent portions 14 and 24 to the portion closest to the proximal ends 12 and 22 among the non-joint portions 13 and 23. Specifically, D1 / D2, which is the ratio of the distance D1 to the distance D2, is set to be 1 / 4 or more and 1 / 7 or less. For example, the length L1 of the non-joint portions 13 and 23 in the direction along the center line C1 is set to 73 ± 2 mm, the distance D1 is set to 11 ± 1 mm, and the distance D2 is set to 62 ± 1 mm. In this case, even including manufacturing errors, D1 / D2 will be in the range of 1 / 6.3 to 1 / 5.1. Therefore, it is possible to ensure that the above-mentioned D1 / D2 is within the range of 1 / 4 or more and 1 / 7 or less.

[0029] Incidentally, the overall length L of the hair treatment tool 1 and the length L2 of the proximal ends 12 and 22 in the direction along the center line C1 are arbitrary. For example, the length L is set to 95 ± 2 mm and the length L2 is set to 22 ± 1 mm.

[0030] Further, as shown in FIG. 3, when the hair treatment tool 1 is viewed from the side, the non-joint portions 13 and 23 are linear from the boundary position with the base end portions 12 to the bent portions 14 and 24, and are also linear from the bent portions 14 and 24 to the tip end portions 11 and 21. That is, the first clamping piece 10 and the second clamping piece 20 are flat plate-shaped from the boundary position with the base end portions 12 of the non-joint portions 13 and 23 to the bent portions 14 and 24, and are also flat plate-shaped from the bent portions 14 and 24 to the tip end portions 11 and 21. And since the bent portions 14 and 24 are arranged closer to the tip end portions 11 and 21, with respect to the longitudinal direction of the hair treatment tool 1, for the angle θ1 formed by the portion from the bent portions 14 and 24 to the tip end portions 11 and 21 and the angle θ2 formed by the portion from the bent portions 14 and 24 to the base end portions 12 and 22 of the non-joint portions 13 and 23, the angle θ1 > the angle θ2. For example, the angle θ3 of the bent portions 14 and 24 is 152 degrees, the angle θ1 is 22 degrees, and the angle θ2 is 6 degrees.

[0031] With the above settings of the distances D1 and D2 and the angles θ1 to θ3, in a state where no force is applied to the hair treatment tool 1, that is, in a state where the non-joint portions 13 and 23 are not bent, there is a gap between the two tip end portions 11 and 21. And when a force is applied to the hair treatment tool 1 and the first clamping piece 10 and the second clamping piece 20 are bent at the non-joint portions 13 and 23, the size of the gap between the two tip end portions 11 and 21 changes, and the tip end portions 11 and 21 are brought into contact with each other.

[0032] Furthermore, the direction perpendicular to the vertical direction of the paper surface of FIG. 2, that is, the direction perpendicular to the direction in which the first clamping piece 10 and the second clamping piece 20 are arranged, and also perpendicular to the longitudinal direction of the hair treatment tool 1 which is the left-right direction of the paper surface of FIG. 2 is referred to as the width direction. Regarding the dimension in this width direction, it is gradually increased from the base end portions 12 and 22 to the bent portions 14 and 24, and is gradually decreased from the bent portions 14 and 24 to the tip end portions 11 and 21.

[0033] More specifically, as shown in FIG. 2, in the non-joint portions 13 and 23, between the bent portions 14 and 24 and the base end portions 12 and 22, the dimension in the width direction is the largest at the bent portions 14 and 24, and the dimension in the width direction is the smallest at the boundary positions with the base end portions 12 and 22. Further, the first clamping piece 10 and the second clamping piece 20 have symmetric outer shapes on both sides with the center line C1 as the symmetry axis between the bent portions 14 and 24 and the base end portions 12 and 22 of the non-joint portions 13 and 23. In this embodiment, for the first clamping piece 10 and the second clamping piece 20, the dimensions in the width direction linearly increase from the base end portions 12 and 22 to the bent portions 14 and 24 on both sides sandwiching the center line C1, and the side surfaces on both sides are shaped to be linearly inclined with respect to the center line C1.

[0034] Also, in the non-joint portions 13 and 23, between the bent portions 14 and 24 and the tip end portions 11 and 21, the dimension in the width direction is the largest at the bent portions 14 and 24, and the dimension in the width direction becomes smaller as it approaches the tip end portions 11 and 21. The tip end portions 11 and 21 are formed in a rounded R shape. Further, as shown in FIG. 2, the first clamping piece 10 and the second clamping piece 20 also have symmetric outer shapes on both sides with the center line C1 as the symmetry axis between the bent portions 14 and 24 and the tip end portions 11 and 21 of the non-joint portions 13 and 23. In this embodiment, for the first clamping piece 10 and the second clamping piece 20, except for the portions formed in the R shape of the tip end portions 11 and 21, the dimensions in the width direction linearly decrease from the bent portions 14 and 24 to the tip end portions 11 and 21 on both sides sandwiching the center line C1, and the side surfaces on both sides are shaped to be linearly inclined with respect to the center line C1.

[0035] Regarding the dimensions in the width direction of the non-joint portions 13 and 23, the dimension W1 at the bent portions 14 and 24 is larger than the dimension W2 on the base end portion 12 and 22 side, and the ratio W1 / W2 is set to be 4 / 3 or more and 3 or less. For example, the dimension W1 is 9 ± 1 mm and the dimension W2 is 5.5 ± 1 mm. In this case, even including manufacturing errors, W1 / W2 is in the range of 8 / 5.6 to 10 / 5.4. Therefore, it is possible to ensure that the above-mentioned W1 / W2 is within the range of 4 / 3 or more and 3 or less.

[0036] Further, for example, in the direction along the center line C1, the length L3 of the R-shaped portion of the tip portions 11 and 21 is set to 1 ± 0.5 mm, and the length L4 of the non-R-shaped portion of the tip portions 11 and 21 is set to 10 ± 0.5 mm. And the dimension W3 in the width direction at the boundary between the R-shaped portion and the non-R-shaped portion is 3 mm.

[0037] Note that the widths of the base end portions 12 and 22 may be constant, or may become narrower as they approach the rear end portions 15 and 25 shown in FIG. 3 on the side opposite to the tip portions 11 and 21. In the present embodiment, the widths of the base end portions 12 and 22 become smaller as they go from the boundary position with the non-bonded portions 13 and 23 toward the rear end portions 15 and 25. For example, in the state of being a metal flat plate before processing of the first clamping piece 10 and the second clamping piece 20, the dimension in the width direction of the base end portions 12 and 22 is gradually reduced toward the rear end portion 15 and 25 side so that the portions that become the non-bonded portions 13 and 23 and the portions that become the base end portions 12 and 22 are straight lines. Also, although the rear end portions 15 and 25 are rounded, they may be linear along the width direction or the like.

[0038] Furthermore, as shown in FIGS. 3 and 4, the portions of the tip portions 11 and 21 that face each other are flat surfaces 11a and 21a that face each other. The flat surfaces 11a and 21a are configured by thinning the thickness of the tip portions 11 and 21 within a predetermined range from the outermost tip of the tip portions 11 and 21. The range for which the flat surfaces 11a and 21a are formed is arbitrary, but here, the range corresponding to the R-shaped portion of the tip portions 11 and 21 is the flat surfaces 11a and 21a. As described above, the hair treatment tool 1 according to the present embodiment is configured.

[0039] 〔Usage method of the hair treatment tool 1〕 Next, the usage method of the hair treatment tool 1 according to the present embodiment configured as described above will be described.

[0040] Regarding the hair treatment tool 1 of the present embodiment, for example, as shown by the two-dot chain line ellipse in FIG. 3, when holding and using it by hand, the belly or fingertip part of the thumb and index finger touches a place closer to the bent parts 14, 24 on the base end part 12, 22 side than the bent parts 14, 24 among the non-joint parts 13, 23. Or, the belly or fingertip part of the thumb and index finger may directly touch the bent parts 14, 24.

[0041] After holding the hair treatment tool 1 by hand, move the hair treatment tool 1 until the hair to be plucked is positioned between the flat surfaces 11a, 21a of both tip parts 11, 21, and apply force with the fingertips to the pair of clamping pieces 10, 20. As a result, the interval between the non-joint parts 13, 23 is reduced, and the hair to be plucked can be pinched by the flat surfaces 11a, 21a of both tip parts 11, 21. Since the flat surfaces 11a, 21a are formed on both tip parts 11, 21, it is possible to stably pinch the hair over a wide range. Then, move the hair treatment tool 1 while pinching the hair to pull the hair. As a result, the hair to be plucked can be plucked. After plucking the hair, when the force of the finger is relaxed, the deflection of the first clamping piece 10 and the second clamping piece 20 returns by the spring force, and the space between both tip parts 11, 21 opens again as shown in FIG. 1. Therefore, a large number of hairs can be continuously plucked.

[0042] 〔Effect of the hair treatment tool 1〕 According to the hair treatment tool 1 according to the present embodiment described above, the following effects can be achieved.

[0043] (1) In the hair treatment tool 1 of this embodiment, the bent portions 14 and 24 are arranged closer to the tip portions 11 and 21. When arranged in such a manner, among the non-joined portions 13 and 23, the portions pressed by the fingers are arranged closer to the tip portions 11 and 21. For this reason, when performing hair treatment, the fingers can be in a state closer to the tip portions 11 and 21, so that it becomes possible to perform hair treatment as if pinching the hair with the fingers. Regarding hair treatment, it is not only the case of performing it while directly checking the target location or checking the target location with a mirror, but for example, there may be a case where one wants to perform it by the method of pinching the hair blindly without using a mirror. In that case, it is easier to perform hair treatment when the fingers are in a state closer to the tip portions 11 and 21. Therefore, by arranging the bent portions 14 and 24 closer to the tip portions 11 and 21 as in the hair treatment tool 1 of this embodiment, it is possible to perform hair treatment as if pinching the hair with the fingers, and it is also possible to easily make it easier to pinch the hair even when pinching the hair blindly.

[0044] (2) When the bending portions 14 and 24 are arranged closer to the tip portions 11 and 21 like the hair treatment tool 1 of the present embodiment, with respect to the longitudinal direction, regarding the angle θ1 formed by the portion from the bending portions 14 and 24 to the tip portions 11 and 21 and the angle θ2 formed by the portion from the bending portions 14 and 24 to the base end portions 12 and 22 among the non-joint portions 13 and 23, the angle θ1 > the angle θ2. And when performing hair treatment, the greater the angle θ1, the stronger the force to pick up the hair when the same force is applied. In addition, the greater the angle θ1, the greater the distance between the portions pushed by the finger among the pair of holding pieces 10 and 20 can be made, so that while preventing the non-joint portions 13 and 23 from being excessively bent, a margin for bending is left, making it easier to apply more force after picking up the hair. Also, the greater the angle θ1, the easier it is for the force of the finger to act as the force to sandwich the hair as it is. For this reason, during hair treatment, by picking up the hair more strongly, the hair can be made less slippery, enabling more accurate hair treatment, and since hair treatment can be performed with a relatively small force, the finger can be made less likely to get tired even when performing a large number of hair treatments. Therefore, regardless of age, gender, or whether male or female, the hair treatment tool 1 can be made easy to use for the user. Also, since the tip portions 11 and 21 are tapered more than the bending portions 14 and 24, when using the hair treatment tool 1 by placing the finger on the base end portion 12 and 22 side rather than the bending portions 14 and 24 of the non-joint portions 13 and 23, the hair to be treated is less likely to be hidden, making the hair to be treated easier to see and easier to treat.

[0045] Also, by being able to realize a hair treatment tool 1 that is easy to use for anyone in this way, it becomes easy to keep clean by removing stray hairs, and it can contribute to Goal 3, "Good health and well-being for all," among the 17 goals in the SDGs (Sustainable Development Goals, Goals for Sustainable Development) adopted at the United Nations Summit.

[0046] (3) In the hair treatment tool 1 of the present embodiment, the dimension in the width direction gradually increases from the base end portions 12 and 22 to the bending portions 14 and 24, and gradually decreases from the bending portions 14 and 24 to the tip portions 11 and 21.

[0047] In the hair treatment tool 1 for performing hair removal or the like, during use, the pair of clamping pieces 10 and 20 can pinch hair with the tip portions 11 and 21 as the non-joint portions 13 and 23 that are separated from each other are bent. However, among the non-joint portions 13 and 23, the position closest to the base end portions 12 and 22 is mainly bent. For this reason, weakening the spring force at the position closest to the base end portions 12 and 22 of the non-joint portions 13 and 23 can reduce the force required during hair treatment. And since hair removal can be performed with a relatively weak force, the force applied to the joint portion of the base end portions 12 and 22 can also be small, making it difficult for the joint portion to peel off.

[0048] On the other hand, for the portions of the non-joint portions 13 and 23 that are pressed by a finger during use, making the width dimension larger can make it easier to press. Also, if the dimension in the width direction of the non-joint portions 13 and 23 is gradually increased from the base end portions 12 and 22 toward the bent portions 14 and 24, it is possible to make the non-joint portions 13 and 23 bend on the side of the base end portions 12 and 22 while making it difficult for the bent portions 14 and 24 to bend. If the non-joint portions 13 and 23 bend excessively over a wide range in the longitudinal direction, the positions of both tip portions 11 and 21 of the pair of clamping pieces 10 and 20 may not match. However, by restricting the main bending location of the non-joint portions 13 and 23 to the side of the base end portions 12 and 22, excessive bending of the non-joint portions 13 and 23 can be suppressed, and the positions of both tip portions 11 and 21 of the pair of clamping pieces 10 and 20 can be accurately matched.

[0049] (4) In the hair treatment tool 1 of this embodiment, W1 / W2, which is the ratio of the dimension W1 in the width direction at the bent portions 14 and 24 of the non-joint portions 13 and 23 to the dimension W2 in the width direction at the side of the base end portions 12 and 22 closest to the base end portions, is set to be 4 / 3 or more and 3 or less. In this way, by making W1 / W2 be 4 / 3 or more and 3 or less, it is possible to make the width at the bent portions 14 and 24 easy to press while making the side of the non-joint portions 13 and 23 closest to the base end portions 12 and 22 narrow and easy to bend.

[0050] (5) The pair of clamping pieces 10 and 20 are sized such that the width dimension decreases from the bent portions 14 and 24 toward the tip portions 11 and 21, and the tip portions 11 and 21 are rounded. The tip portions 11 and 21 are used for hair removal by sandwiching and pulling out hair with the opposing flat surfaces 11a and 21a provided at the tip portions 11 and 21. In this way, by rounding the tip portions 11 and 21, it is possible to prevent the tip portions 11 and 21 from damaging the skin even when they come into contact with the skin around the hair.

[0051] (6) Since the pair of clamping pieces 10 can be formed into a simple form made of a metal flat plate, it is possible to achieve a design that is smooth without unevenness and not easily boring. In addition, since the hair treatment tool 1 can be formed into a form that is easy to clean and wipe, it can be kept clean.

[0052] (7) In the hair treatment tool 1 of the present embodiment, the pair of clamping pieces 10 and 20 can be formed by processing a metal flat plate. The first clamping piece 10 and the second clamping piece 20 have the same shape. Therefore, when cutting out the first clamping piece 10 and the second clamping piece 20 in a flat plate state before forming the bent portions 14 and 24, etc., they can be cut out as close to each other as possible. That is, the tip portion 11 of the first clamping piece 10 and the rear end portion 25 of the second clamping piece 20 are adjacent to each other, and the rear end portion 15 of the first clamping piece 10 and the tip portion 21 of the second clamping piece 20 are adjacent to each other, and the first clamping piece 10 and the second clamping piece 20 are cut out adjacent to each other. As a result, almost no surplus material is wasted.

[0053] In this way, since waste can be reduced, it is possible to contribute to Goal 12 of the SDGs, "Responsibility for production and responsibility for consumption."

[0054] Also, when integrating the first clamping piece 10 and the second clamping piece 20, since it is only necessary to join the base end portions 12 and 22 whose width dimensions are smaller than those of the other portions, joining can be performed, for example, only by spot welding at two points as described above. Therefore, it is possible to simplify the joining process between the first clamping piece 10 and the second clamping piece 20 and save energy. Consequently, it can lead to the mitigation and reduction of the impact of climate change and contribute to Goal 13 of the SDGs, "Take specific measures on climate change."

[0055] (Second Embodiment) Referring to FIGS. 5 to 7, the hair treatment tool 1 according to the second embodiment will be described. In this embodiment, the hair treatment tool 1 used as a hair clipper will be described. Note that this embodiment is different from the first embodiment in the shapes of the tip portions 11 and 21, and the other parts are the same as those in the first embodiment, so only the parts different from the first embodiment will be described.

[0056] As shown in FIGS. 5 to 7, in the hair treatment tool 1 of this embodiment, the tip portions 11 and 21 are linear along the width direction. The dimension W4 in the width direction of the tip portions 11 and 21 is 2.5 to 4 mm, preferably 3 mm. And as shown in FIG. 7, each of the tip portions 11 and 21 is sharpened in the direction approaching each other, and the sharpened portions constitute the hair cutting portions 11b and 21b. When the hair treatment tool 1 is pressed with a finger to bend the non-joint portions 13 and 23, the hair cutting portions 11b and 21b are aligned so as to be in line contact with each other. Therefore, when using the hair treatment tool 1, the hair can be cut by sandwiching the hair with the hair cutting portions 11b and 21b and increasing the force of the pressing finger.

[0057] More specifically, the most distal side on one surface of the tip portion 11 of the first holding piece 10 on the side of the tip portion 21 of the second holding piece 20 protrudes the most. Similarly, the most distal side on one surface of the tip portion 21 of the second holding piece 20 on the side of the tip portion 11 of the first holding piece 10 protrudes the most. And the angle of the hair cutting portion 11b, that is, the angle formed by the end surface of the tip portion 11 and the surface of the tip portion 11 on the side of the tip portion 21, is an acute angle, and the angle of the hair cutting portion 21b, that is, the angle formed by the end surface of the tip portion 21 and the surface of the tip portion 21 on the side of the tip portion 11, is an acute angle. In this way, the tips of the hair cutting portions 11b and 21b are sharpened, and if a force is applied until the hair cutting portions 11b and 21b are in line contact with each other when using the hair treatment tool 1, the hair sandwiched by the hair cutting portions 11b and 21b can be easily cut.

[0058] In this way, the hair treatment tool 1 can also be used as a hair clipper. In that case as well, except for the shapes of the tip portions 11 and 21, the structure can be the same as that of the first embodiment. Thereby, the same effects as those of the first embodiment can be obtained.

[0059] (Other Embodiments) The present disclosure is not limited to the above-described embodiments, and can be appropriately modified within the scope described in the claims. Also, in each of the above embodiments, it goes without saying that the elements constituting the embodiment are not necessarily essential, except in cases where it is explicitly stated that they are essential or when they are considered to be clearly essential in principle. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the components of the embodiment are mentioned, they are not limited to that specific number, except in cases where it is explicitly stated that they are essential or when they are clearly limited to a specific number in principle. Also, in each of the above embodiments, when referring to the shape, positional relationship, etc. of the components, etc., they are not limited to that shape, positional relationship, etc., except in cases where it is explicitly stated or when they are clearly limited to a specific shape, positional relationship, etc. in principle.

[0060] For example, in each of the above embodiments, a suitable example of the dimensions of each part constituting the hair treatment tool 1 is shown, but it is not necessarily required to be the above-described dimensions. Also, in each of the above embodiments, the side surfaces on both sides of the center line C1 in the first clamping piece 10 and the second clamping piece 20 are shaped to be linearly inclined with respect to the center line C1, but this is only an example. For example, the width may gradually increase between the most proximal end portions 12 and 22 and the bent portions 14 and 24 in the non-joined portions 13 and 23, and may also gradually decrease between the bent portions 14 and 24 and the tip portions 11 and 21 in the non-joined portions 13 and 23. Therefore, the side surfaces on both sides of the center line C1 in the first clamping piece 10 and the second clamping piece 20 may not be linear but may be curved.

[0061] Also, in each of the above embodiments, the pair of clamping pieces 10 and 20 constituting the hair treatment tool 1 are formed by processing a metal flat plate, but this is only an example. That is, the widest portions of the pair of clamping pieces 10 and 20 are the bent portions 14 and 24, and it is sufficient to have a shape that directly presses the vicinity of the bent portions 14 and 24 with a finger. For example, a pair of clamping pieces 10 and 20 in the shape of a metal plate may be formed by casting using a mold. However, by processing a metal flat plate to form the pair of clamping pieces 10 and 20, it is possible to facilitate the manufacturing process and reduce the amount of surplus material that would be wasted, contributing to the achievement of the SDGs' Goals 12 and 13.

Explanation of Signs

[0062] 1... Hair treatment tool, 10, 20... Pair of clamping pieces (first clamping piece, second clamping piece), 11, 21... Tip portions, 11a, 21a... Flat surfaces, 11b, 21b... Hair cutting portions, 12, 22... Base end portions, 13, 23... Non-joint portions, 14, 24... Bent portions, 15, 25... Rear end portions, C1... Center line

Claims

1. With one direction as the longitudinal direction, one end on one side of the longitudinal direction is a tip portion (11, 21) for sandwiching hair, and the other end on the other side of the longitudinal direction is a base end portion (12, 22). The base end portions are joined to each other, and a pair of clamping side pieces (10, 20) having a non-joined portion (13, 23) on the portion closer to the tip portion than the base end portion are configured to perform hair treatment by plucking or cutting the hair sandwiched by the tip portion. Both of the pair of clamping pieces are made of a metal plate, have a bent portion (14, 24) bent between the tip portion and the base end portion, and the distance between them gradually widens from the base end portion to the bent portion, and gradually narrows from the bent portion to the tip portion. And, with the direction in which the pair of clamping pieces are arranged and the direction orthogonal to the longitudinal direction as the width direction, the dimension in the width direction gradually increases from the base end portion to the bent portion and gradually decreases from the bent portion to the tip portion. The bent portion is formed at a position closer to the tip portion than the base end portion, a hair treatment tool.

2. In the longitudinal direction, D1 / D2, which is the ratio of the distance D1 from the tip portion to the bent portion and the distance D2 from the base end portion to the bent portion, is 1 / 4 or more and 1 / 7 or less. The hair treatment tool according to Claim 1.

3. W1 / W2, which is the ratio of the dimension W1 in the width direction of the bent portion and the dimension W2 in the width direction closest to the base end portion among the non-joined portions, is 4 / 3 or more and 3 or less. The hair treatment tool according to Claim 1.

4. The pair of clamping pieces are rounded at the tip portion while the dimension in the width direction becomes smaller from the bent portion toward the tip portion, and have flat surfaces (11a, 21a) facing each other at the tip portion, and are configured to pluck the hair while sandwiching it with the flat surfaces. The hair treatment tool according to Claim 1.

5. The pair of clamping pieces are configured such that the dimension in the width direction decreases from the bent portion toward the tip portion, and the tip portion is linear along the width direction. The tip portions of the pair of clamping pieces are each formed with a hair-cutting portion (11b, 21b) that tapers in a direction approaching the other tip portion of the pair of clamping pieces, and the hair-cutting portion cuts the hair while being in line contact with the hair while sandwiching the hair therebetween. The hair treatment tool according to claim 1.

Images