hair cutter

Abstract

To easily apply force in either direction when cutting hair with a blade part whose cutting edge is directed in the opposite direction, thereby enabling easy haircutting. [Solution] The grip portion 21 has first to fourth surfaces 211 to 214 corresponding to the first to fourth surfaces 351 to 354 of the head portion 3. With this structure, when attempting to cut hair with any of the surfaces of the head portion 3 as the skin-contact surface, the grip portion 21 will have an opposite surface facing away from the skin-contact surface. Therefore, regardless of which surface is used to cut hair, it is possible to place fingers F on the opposite surface of the grip portion 21 to cut hair, making it easier to apply force and cut hair.

Description

[Technical Field]

[0001] The present disclosure relates to a hair cutter that can cut hair at multiple lengths. [Background technology]

[0002] Conventionally, Patent Document 1 proposes a double-edged hair styling tool with blades pointing in opposite directions. This hair styling tool has teeth of different lengths on the comb part, allowing each blade to cut hair of different lengths. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 50-72480 Summary of the Invention [Problem to be solved by the invention]

[0004] However, although the hair styling tool in Patent Document 1 can cut hair of different lengths, the handle has an oval cross section, so it is not designed to allow easy application of force regardless of which cutting edge is used to cut hair, making it difficult to cut hair.

[0005] The present disclosure aims to make it easy to apply force and cut hair easily when cutting hair with blades whose cutting edges are facing in opposite directions, regardless of the direction in which hair is cut. [Means for solving the problem]

[0006] A hair cutter according to a first aspect of the present disclosure includes: a handle portion (2) formed of a rod-shaped member with one longitudinal direction and having a front end portion (22) and a rear end portion (23) opposite the front end portion; a head portion (3) disposed on the tip end side of the handle portion, The head portion is a first blade portion (31) including a first comb structure (312) in which a first cutting edge (311a) faces one side of the width direction, the first cutting edge being perpendicular to the longitudinal direction, and a plurality of first comb teeth (312a) covering the first blade body are arranged at first intervals (S1), and the first blade portion (31) cuts hair that has passed through the first comb teeth with the first blade body; the second blade portion (32) includes a planar second blade body (321) having a second cutting edge (321a) facing the other side in the width direction, and a second comb structure (322) in which a plurality of second comb teeth (322a) covering the second blade body are arranged at a second interval (S2) narrower than the first interval, and the second blade portion (32) is shorter than the first blade portion and cuts hair that has passed through the second comb teeth with the second blade body in a range narrower than the haircut range of the first blade body, the first comb structure teeth, The plurality of first comb teeth covering the first blade Among these, the one protruding in the normal direction of the first blade a portion of the second comb structure that exposes the first blade body between the plurality of first comb teeth is a valley; teeth, The plurality of second comb teeth covering the second blade body Among these, the one protruding in the normal direction of the second blade a portion where the second blade body is exposed between the plurality of second comb teeth is a valley, a line connecting the portions of the crests of the plurality of first comb teeth that protrude most from the first blade body is defined as a crest line; On one side and the other side of the first blade body, imaginary planes that pass through the ridge lines of the mountains formed by each of the plurality of first comb teeth and are inclined relative to the first blade body are defined as a head first surface (351) and a head second surface (352), respectively; a line connecting the portions of the crests of each of the plurality of second comb teeth that protrude most from the second blade body is defined as a crest line; On one side and the other side of the second blade body, imaginary planes that pass through the ridge lines of the mountains formed by each of the plurality of second comb teeth and are inclined with respect to the second blade body are defined as a head third surface (353) and a head fourth surface (354), respectively; the head first surface and the head second surface are disposed on one side and the other side of the first blade body in the first blade portion, respectively, and are inclined with respect to the first blade body so as to approach each other toward the one direction side; the head third surface and the head fourth surface are disposed on one side and the other side of the second blade body in the second blade portion, respectively, and are inclined with respect to the second blade body so as to approach each other toward the other direction side; The handle portion has a handle first surface (211) and a handle second surface (212) on one side and the other side of the first blade body, which are inclined relative to the first blade body so as to approach each other toward the one side, and a handle third surface (213) and a handle fourth surface (214) on one side and the other side of the second blade body, which are inclined relative to the second blade body so as to approach each other toward the other side. . With this configuration, regardless of which side is used to cut hair, it is possible to place your fingers on the side opposite the handle to cut hair, making it easier to apply force and cut hair.

[0007] The reference symbols in parentheses attached to each component indicate an example of the correspondence between the component and the specific components described in the embodiments described below. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a front view of a hair cutter according to a first embodiment of the present disclosure. [Figure 2] FIG. 2 is a bottom view of the hair cutter shown in FIG. [Figure 3] 1(a) is an exploded view of the tip of the handle and the head when in the first position, and FIG. 1(b) is an exploded view of the head when in the second position. [Figure 4] FIG. 10 is a cross-sectional view of the length adjustment mechanism. [Figure 5] 1(a) is a partial cross-sectional view of the tip of the handle and the head when the device is in the first position, and FIG. 1(b) is a partial cross-sectional view of the tip of the handle and the head when the device is in the second position. [Figure 6] 10(a) and 10(b) are bottom views of the hair cutter showing how it cuts hair by moving it in the directions of arrows A1 and A2, respectively. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the following, including other embodiments described below, identical or equivalent parts will be denoted by the same reference numerals.

[0010] (First embodiment) A hair cutter 1 according to a first embodiment of the present disclosure will be described below with reference to FIGS.

[0011] [Configuration of hair cutter 1] The hair cutter 1 shown in Figures 1 to 6 combines two types of razors to achieve different lengths of haircut. The hair cutter 1 can be used to cut hair all over the body, for example, for shaving to cut relatively long hair on the arms and legs, and for shaving to cut relatively short hair on sensitive areas such as the VIO zone. The V zone refers to the area below the belly button, also known as the bikini line, the I zone refers to the area from around the genitals to the anus, and the O zone refers to the area around the anus.

[0012] The drawings accompanying this specification indicate the X-axis, Y-axis, and Z-axis. As shown in Fig. 1, the vertical direction when viewing the hair cutter 1 from the front, i.e., the longitudinal direction, is called the X-axis, the left-right direction of the hair cutter 1 perpendicular to the X-axis, i.e., the width direction, is called the Y-axis, and the thickness direction of the hair cutter 1 perpendicular to the X-axis and Y-axis is called the Z-axis.

[0013] As shown in FIGS. 1 to 6, the hair cutter 1 has a handle portion 2 and a head portion 3 provided with a first blade portion 31 and a second blade portion 32.

[0014] [Configuration of handle portion 2] The handle portion 2 is made of a rod-shaped member with one direction as the longitudinal direction, and has a rod-shaped grip portion 21. One end of the grip portion 21 in the X-axis direction is a tip portion 22, and the opposite end is a rear end portion 23, and the head portion 3 is attached to the tip portion 22. The handle portion 2 is made of, for example, resin.

[0015] The grip portion 21 has a first center line L1 along the longitudinal direction. The shape of the grip portion 21 is a hexagonal cross section with the longitudinal direction as the normal direction, specifically, a flat hexagon with rounded corners as shown in FIG. 2, and the hexagonal shape is configured with the first center line L1 as the center. The dimensions of the grip portion 21 in each radial direction about the first center line L1 gradually increase from the front end 22 to the rear end 23 along the first center line L1, but may also be the same.

[0016] The grip portion 21 has six surfaces, a first surface 211 to a sixth surface 216. These first surfaces 211 to 216 correspond to the first to sixth handle surfaces. The first to fourth surfaces 211 to 214 correspond to the first to fourth surfaces 351 to 354 of the head portion 3, which will be described later. The fifth surface 215 is a surface between the first surface 211 and the second surface 212, and the sixth surface 216 is a surface between the third surface 213 and the fourth surface 214. Details of these first to sixth surfaces 211 to 216 will be described later.

[0017] As shown in FIG. 1, the grip portion 21 may be provided with a plurality of grooves 21a along a direction inclined relative to the first center line L1 to provide a non-slip surface. In the case where the grooves 21a are provided, the surfaces connecting the portions that are not the grooves 21a are designated as the first surface 211 to the sixth surface 216.

[0018] The tip portion 22 is a portion that supports the head portion 3. In this embodiment, the tip portion 22 is housed within the head portion 3 and constitutes a part of a length adjustment mechanism 313 (described later) provided in the head portion 3. As shown in FIG. 3 , openings 221, 222, etc. are formed in the tip portion 22 on the grip portion 21 side and the opposite side. Furthermore, a locking portion 223 and a slide guide 224 that constitute part of the length adjustment mechanism 313 are formed between the two openings 221, 222. The locking portion 223 has a semicircular cross section as shown in FIG. 4 and constitutes part of the spring mechanism in the length adjustment mechanism 313. The slide guide 224 is formed with a groove that extends along the Y-axis direction. Here, a rail 224a extending in the Y-axis direction is provided inside the groove that constitutes the slide guide 224, making it easier to guide.

[0019] [Configuration of head unit 3] As shown in Fig. 1, the head portion 3 includes a first cutting edge portion 31 and a second cutting edge portion 32. The outer shape of the head portion 3 is formed by a cover portion 34. As shown in Figs. 1 to 3, the cover portion 34 has a first cover 341 and a second cover 342. As shown in Fig. 2, the head portion 3 is fixed to the tip portion 22 by fitting protrusions 342a and 342b protruding from the inner wall of the second cover 342 into openings 221 and 222 of the tip portion 22 and fitting or joining the outer edges of the first cover 341 and the second cover 342.

[0020] The first cover 341 and the second cover 342 form the outer shape of the head portion 3, but also form the first comb structure 312 of the first blade portion 31 and the second comb structure 322 of the second blade portion 32, as described below.

[0021] The first blade portion 31 and the second blade portion 32 are arranged on one side and the other side in the Y-axis direction, that is, on the left and right sides in FIG. 1, and enable haircuts of different lengths.

[0022] The first blade portion 31 is disposed on one side of the head portion 3 in the Y-axis direction, and includes a first blade body 311 , a first comb structure 312 , and a length adjustment mechanism 313 .

[0023] The first blade body 311 is flat, for example, in the shape of a substantially rectangular plate, with one side constituting the first cutting edge 311a, and one of the long sides is the first cutting edge 311a, which faces one side in the Y-axis direction. The first cutting edge 311a is disposed, for example, parallel to the first center line L1.

[0024] The first comb structure 312 is formed by a part of the cover portion 34 and covers the first cutting edge 311a in a comb-teeth shape. The first comb structure 312 is formed by arranging a plurality of first comb teeth 312a at equal intervals S1 along a side of the cover portion 34 that is along the first center line L1 on one side in the Y-axis direction. Specifically, one surface of the first blade 311 is covered by a portion of the first comb structure 312 that is formed by the first cover 341, and the other surface is covered by a portion of the first comb structure 312 that is formed by the second cover 342.

[0025] The first comb structure 312 has peaks where the multiple first comb teeth 312a cover the first cutting edges 311a, and valleys where the first cutting edges 311a are exposed between the multiple first comb teeth 312a. Hair that passes through the valleys is cut by the first blade body 311. The length of hair cut by the first blade section 31 is determined by the shortest distance between the ridge lines of the peaks of the first comb teeth 312a and the first cutting edges 311a. The first comb teeth 312a protrude to one side in the Y-axis direction beyond the first cutting edges 311a to prevent the user's skin from coming into contact with the first cutting edges 311a, while also covering one side and the other side of the first blade body 311. The tip of the first comb tooth 312a on the second cover 342 side protrudes further than the tip on the first cover 341 side, and the tip of the protruding part is made R-shaped while covering the tip on the first cover 341 side, thereby preventing the tip of the first comb tooth 312a from catching on the user's skin during use.

[0026] 2, of the multiple first comb teeth 312a, a first surface 351 is formed on an imaginary plane that passes through the ridgeline formed by the portion of the first cover 341 side and is inclined relative to the first blade body 311, and a second surface 352 is formed on an imaginary plane that passes through the ridgeline formed by the portion of the second cover 342 side and is inclined relative to the first blade body 311. When cutting hair using the first blade portion 31, the first surface 351 is the skin contact surface that comes into contact with the user's skin if the user is left-handed, and the second surface 352 is the skin contact surface that comes into contact with the user's skin if the user is right-handed.

[0027] The length adjustment mechanism 313 shown in Fig. 3 adjusts the length of hair to be cut by moving the first blade tip 311a in the Y-axis direction relative to the tip of the first comb tooth 312a. Specifically, as shown in Figs. 3 and 4, the length adjustment mechanism 313 has a first clamping portion 313a that abuts on one side of the first blade body 311 and a second clamping portion 313b that abuts on the other side of the first blade body 311, and these clamp the first blade body 311. As shown in Fig. 4, the first clamping portion 313a and the second clamping portion 313b are provided with mating convex portions 313i and concave portions 313j. The first blade body 311 is fixed to the first clamping portion 313a and the second clamping portion 313b by inserting the convex portion 313i into the through-hole 311b formed in the first blade body 311 and fitting into the concave portion 313j.

[0028] Length adjustment mechanism 313 is also formed integrally with first clamping portion 313a and includes locking portion 313c extending from first clamping portion 313a in a direction away from first blade 311. Locking portion 313c has, aligned in the Y-axis direction, a first recess 313d having a semicircular cross section recessed from first clamping portion 313a, a protrusion 313e located farther from first clamping portion 313a than first recess 313d, and a second recess 313f located on the opposite side of protrusion 313e from first recess 313d. The dimension of locking portion 313c in the X-axis direction is matched to the dimension of slide guide 224 in the same direction, and a groove (not shown) extending in the Y-axis direction corresponding to rail 224a is provided on one surface of locking portion 313c on the second clamping portion 313b side. The locking portion 313c and the locking portion 223 provided on the tip portion 22 constitute a spring mechanism, which enables the first cutting edge 311a to move relative to the tip of the first comb tooth 312a in the Y-axis direction.

[0029] Specifically, as shown in Fig. 3, an adjustment protrusion 313h is formed on one surface of first clamping portion 313a facing first cover 341, and as shown in Fig. 1, first cover 341 is formed with a through-hole 341a through which adjustment protrusion 313h is inserted. Within through-hole 341a, adjustment protrusion 313h is movable in the Y-axis direction and can be switched between a first position farther from second blade portion 32 and a second position closer to second blade portion 32. That is, elastic deformation of at least one of locking portion 223 and locking portion 313c enables locking portion 223 to ride over protrusion 313e and move from first recess 313d to second recess 313f, or vice versa.

[0030] When switching between the first and second positions, the locking portion 313c slides within the slide guide 224, moving the first blade 311 in the Y-axis direction together with the length adjustment mechanism 313. At this time, because the dimensions of the locking portion 313c and the slide guide 224 in the X-axis direction are aligned, the first blade 311 can be moved accurately without misalignment. Furthermore, by providing the rail 224a and sliding the first blade 311 within a groove formed on one surface of the locking portion 313c on the second clamping portion 313b side, sliding resistance can be reduced, making it easier to switch positions. Furthermore, if the locking portion 223 or the locking portion 213c is made of rubber, the locking portion 223 can easily climb over the protrusion 313e, making it easier to switch positions.

[0031] In the first position, the locking portion 223 is located within the second recess 313f. In this position, as shown in FIG. 5(a), the portions of the first clamping portion 313a and the second clamping portion 313b that face the first cutting edge 311a abut against the inner wall surface of the cover portion 34, and the first blade body 311 is held without rattle. Therefore, when cutting hair with the first blade body 311, even if a force is applied in a direction that pushes the first cutting edge 311a, the inner wall surface of the second recess 313f abuts against the locking portion 223, thereby absorbing the force and enabling the haircut. In the first position, the first cutting edge 311a is located closer to the tip of the first comb tooth 312a than in the second position, allowing for a relatively short haircut.

[0032] In the second position, the locking portion 223 is located within the first recess 313d. In this position, as shown in FIG. 5(b), the portions of the first clamping portion 313a and the second clamping portion 313b that face the first cutting edge 311a are separated from the inner wall surface of the cover portion 34. However, the locking portion 223 fits into the semicircular cross-section of the first recess 313d, thereby holding the first blade body 311 securely. Therefore, when cutting hair with the first blade body 311, even if a force is applied in a direction that pushes the first cutting edge 311a, the inner wall surface of the first recess 313d abuts against the locking portion 223, thereby absorbing the force and enabling the haircut. In the second position, the first cutting edge 311a is located farther away from the tip of the first comb tooth 312a than in the first position, allowing for a relatively long haircut.

[0033] Here, when switching from the first position to the second position, the movement amount M of the first blade body 311 shown in Figure 5 is set to, for example, 1.8 mm. In this case, the change in the shortest distance between the ridge line of the first comb teeth 312a and the first cutting edge 311a between the first position and the second position can be set to, for example, about 0.5 mm, making it possible to finely adjust the length of the hair after cutting in two stages.

[0034] The second blade portion 32 is disposed on the other side of the head portion 3 in the Y-axis direction, and includes a second blade body 321 and a second comb structure 322 .

[0035] The second blade body 321 is flat, for example, a substantially rectangular plate as shown in FIG. 3, with one side defining the second cutting edge 321a. One of the longer sides defines the second cutting edge 321a and faces the other side in the Y-axis direction. The second cutting edge 321a is disposed parallel to the first center line L1, for example. An oval slot 321b with its major axis aligned in the X-axis direction is formed inside the second blade body 321. The engaging protrusion 342c of the second cover 342 is inserted into the slot 321b, so that the second cover 342 securely holds the second blade body 321. When the first cover 341 is attached to the second cover 342, the second blade body 321 is clamped between them.

[0036] The second comb structure 322 is formed by a part of the cover portion 34 and covers the second cutting edge 321a in a comb-teeth shape. The second comb structure 322 is formed by arranging a plurality of second comb teeth 322a at equal intervals at a second interval S2 narrower than the first interval S1 along a side of the cover portion 34 that is along the first center line L1 on the other side in the Y-axis direction. Specifically, one surface of the second blade body 321 is covered by a portion of the second comb structure 322 formed by the first cover 341, and the other surface is covered by a portion of the second comb structure 322 formed by the second cover 342.

[0037] In the second comb structure 322, the portions of the multiple second comb teeth 322a that cover the second cutting edges 321a are called peaks, and the portions between the multiple second comb teeth 322a that expose the second cutting edges 321a are called valleys. Hair that passes through the valleys is cut by the second blade body 321. The length of hair cut by the second blade portion 32 is determined by the shortest distance between the ridgeline of the peaks of the second comb teeth 322a and the second cutting edges 321a. Because the distance from the second cutting edges 321a to the tips of the second comb teeth 322a is shorter than the distance from the first cutting edges 311a to the tips of the first comb teeth 312a, the second blade portion 32 can cut shorter hair than the first blade portion 31. The second comb teeth 322a protrude further in the Y-axis direction than the second cutting edge 321a to prevent the user's skin from coming into contact with the second cutting edge 321a, while also covering one side and the other side of the second blade body 321. As shown in Fig. 2, the tips of the second comb teeth 322a on the second cover 342 side protrude further than the tips on the first cover 341 side, and the tips of the protruding parts are rounded while covering the tips on the second cover 342 side, thereby preventing the tips of the second comb teeth 322a from catching on the user's skin during use.

[0038] Of the multiple second comb teeth 322a, a third surface 353 is formed on an imaginary plane that passes through the ridgeline of the mountain formed by the portion on the second cover 342 side and is inclined relative to the second blade body 321, and a fourth surface 354 is formed on an imaginary plane that passes through the ridgeline of the mountain formed by the portion on the second cover 342 side and is inclined relative to the second blade body 321. When cutting hair using the second blade section 32, the third surface 353 is the skin contact surface that comes into contact with the user's skin if the user is right-handed, and the fourth surface 354 is the skin contact surface that comes into contact with the user's skin if the user is left-handed.

[0039] The head portion 3 has a second center line L2 along the longitudinal direction. When viewed from the X-axis direction, the head portion 3 has a flattened hexagonal shape as shown in FIG. 2 , with the hexagonal shape being centered on the second center line L2. The head portion 3 has six surfaces: the first surface 351 to the fourth surface 354, as described above, as well as a fifth surface 355 and a sixth surface 356. These first surfaces 351 to 356 correspond to the first to sixth head surfaces. The first to fourth surfaces 351 to 354 correspond to the first to fourth surfaces 211 to 214 of the grip portion 21, respectively. The fifth surface 355 is a surface between the first surface 351 and the third surface 353, and the sixth surface 356 is a surface between the second surface 352 and the fourth surface 354. Details of the first to sixth surfaces 351 to 356 will be described later.

[0040] The hair cutter 1 according to this embodiment is configured in this manner. Next, the first surface 211 to the sixth surface 216 of the grip portion 21 and the first surface 351 to the sixth surface 356 of the head portion 3 will be described.

[0041] As described above, the first to fourth surfaces 211 to 214 of the grip portion 21 correspond to the first to fourth surfaces 351 to 354 of the head portion 3. The pair of the first surface 211 and the first surface 351, the pair of the second surface 212 and the second surface 352, the pair of the third surface 213 and the third surface 353, and the pair of the fourth surface 214 and the fourth surface 354 face in approximately the same direction and face away from the first center line L1 and the second center line L2. Each surface of each pair is inclined in approximately the same direction with respect to the XY plane passing through the first center line L1 and the second center line L2. The XY plane is parallel to one surface and the other surface of the first blade body 311 and the second blade body 321.

[0042] The first surface 351 and the second surface 352 are inclined in opposite directions relative to one surface of the first blade body 311, and are inclined at an angle of about 15 degrees relative to one surface of the first blade body 311, which is an angle that makes haircuts easy. The first surface 211 and the first surface 351 are parallel to each other or the angle they form is less than 5 degrees. The second surface 212 and the second surface 352 are also parallel to each other or the angle they form is less than 5 degrees.

[0043] The third surface 353 and the fourth surface 354 are inclined in opposite directions relative to one surface of the second blade body 321, and are inclined at an angle of about 30 degrees relative to one surface of the second blade body 321 to make haircuts easier. The third surface 213 and the third surface 353 are parallel to each other or form an angle of less than 5 degrees. The fourth surface 214 and the fourth surface 354 are also parallel to each other or form an angle of less than 5 degrees.

[0044] Furthermore, the hexagonal shape of the grip portion 21 of the handle 2 and the hexagonal shape of the head portion 3 are arranged so as to be offset by 90 degrees when viewed in the longitudinal direction. Specifically, the grip portion 21 is arranged so that a diagonal line D1 passing between the first surface 211 and the third surface 213 and between the first center line L1 and the second surface 212 and the fourth surface 214 intersects at 90 degrees with a diagonal line D2 passing between the first surface 351 and the second surface 352 of the head portion 3 and between the second center line L2 and the third surface 353 and the fourth surface 354. The distance between the fifth surface 355 and the sixth surface 356 of the head portion 3, i.e., the dimension of the head portion 3 in the Z-axis direction, is set to a thickness of, for example, about 10 mm, making it easy to cut hair while keeping it close to the body and easy to handle in tight areas. 2, in the Z-axis direction, the space between the first surface 211 and the third surface 213 of the handle portion 2 is aligned with the fifth surface 355 of the head portion 3, and the space between the second surface 212 and the fourth surface 214 of the handle portion 2 is aligned with the sixth surface 356 of the head portion 3. Therefore, the handle portion 2 is also thin in the Z-axis direction and has a structure that does not interfere with the handling of the head portion 3.

[0045] [How to use Hair Cutter 1] Next, we will explain how to use the hair cutter 1. As described above, the hair cutter 1 is equipped with two types of razors, the first blade portion 31 and the second blade portion 32, which are arranged facing in opposite directions. This allows the user to cut hair using the type of razor that is appropriate for the area to be cut.

[0046] For example, there is a desire to cut hair shorter in the VIO zone. In such cases, the second blade unit 32 is used. For example, as shown in FIG. 6(a), the fourth surface 354 of the head unit 3 is set as the skin-contacting surface, and the head unit 3 is moved in the direction of arrow A1. This allows the second blade body 321 to cut the hair that passes through the second comb teeth 322a. Furthermore, since the distance from the tip of the second comb teeth 322a to the second cutting edge 321a is shortened, the hair in the VIO zone can be cut short. This makes it possible to keep the VIO zone clean.

[0047] At this time, the hexagonal shape of the clamping portion 2 and the hexagonal shape of the head portion 3 are arranged at an angle of 90 degrees, so that the first surface 211 of the gripping portion 21 is the surface facing away from the fourth surface 354, which is the skin contact surface, as shown in Figure 6(a). This makes it possible to place fingers F on the first surface 211 to cut hair, making it easier to apply force and cut hair.

[0048] On the other hand, there is a desire to cut hair on the arms and legs in a relatively long and even manner. In such cases, the first blade unit 31 is used. For example, as shown in FIG. 6(b), the second surface 352 of the head unit 3 is set as the skin-contacting surface, and the head unit 3 is moved in the direction of arrow A2. This allows the first blade body 311 to cut the hair that passes through the first comb teeth 312a. Furthermore, because the distance from the tip of the first comb teeth 312a to the first cutting edge 311a is longer than that of the second blade unit 32, the hair on the arms and legs can be cut in a relatively long and even manner. This makes it possible to neatly trim the hair on the arms and legs while leaving it at a certain length, and also makes the arms and legs look clean.

[0049] In this case, the hexagonal shape of the clamping portion 2 and the hexagonal shape of the head portion 3 are also arranged at an angle of 90 degrees, so that the third surface 213 of the gripping portion 21 faces away from the second surface 352, which is the skin contact surface, as shown in Figure 6(b). This makes it possible to place fingers F on the third surface 213 to cut hair, making it easier to apply force and cut hair.

[0050] Also, if you want to adjust the length of the hair on your arms or legs, you can adjust the length of the hair by moving the adjustment protrusion 313h in the Y-axis direction and setting it to either the first position or the second position as desired.

[0051] Note that although the above description has been given taking the case where second surface 352 or fourth surface 354 is the skin-contacting surface as an example, the same applies when first surface 351 or third surface 353 is the skin-contacting surface. Even if you try to cut hair with either surface of head unit 3 as the skin-contacting surface, the opposite surface facing away from the skin-contacting surface will be present in gripping portion 21, so it becomes possible to place fingers F on the opposite surface of gripping portion 21 to cut hair, making it easier to apply force and cut hair.

[0052] [Effects of Hair Cutter 1] (1) The hair cutter 1 of this embodiment has first to fourth surfaces 211 to 214 on the grip portion 21 corresponding to the first to fourth surfaces 351 to 354 of the head portion 3, respectively. Because of this structure, when attempting to cut hair with any of the surfaces of the head portion 3 as the skin-contact surface that comes into contact with the skin, the grip portion 21 will have an opposite surface facing away from the skin-contact surface. Therefore, regardless of which surface is used to cut hair, it is possible to place a finger F on the opposite surface of the grip portion 21 to cut hair, making it easier to apply force and cut hair.

[0053] Specifically, the corresponding surfaces are parallel to each other or the angle between them is less than 5 degrees. Therefore, the angle between the opposite surface and the skin contact surface is less than 10 degrees, making it easy to place a finger F on the opposite surface and apply pressure. Furthermore, even if hair is cut with the skin contact surface in contact with the skin, safety is ensured because the first cutting edge 311a and the second cutting edge 321a are covered by the first comb structure 312 and the second comb structure 322.

[0054] (2) The outer shape of the gripping portion 21, i.e., the shape of a cross section normal to the first center line L1, is a hexagonal shape made up of the first surface 211 to the sixth surface 216. In addition, the outer shape of the head portion 3, i.e., the shape of a cross section normal to the second center line L2, is a hexagonal shape made up of the first surface 351 to the sixth surface 356. In addition, the hexagonal shape made up of the gripping portion 2 and the hexagonal shape made up of the head portion 3 are arranged with a 90-degree offset.

[0055] This allows for a shape that makes it easy to maintain contact with the skin when pushing the head part 2 in the direction of hair cutting or pulling it in the opposite direction, and also makes it easy to apply force to the handle part 2. In addition, the hexagonal shape fits comfortably in the hand and has a good design, so the surface of the head part 3 opposite the surface that contacts the skin can be configured as the grip part 21.

[0056] (3) The length adjustment mechanism 313 allows the first blade 311 to be moved in the Y-axis direction. This allows the first blade 31 to cut hair at two different lengths. The first blade 31 also allows the first blade 311 to move due to a spring mechanism consisting of the locking portion 223 provided on the tip 22 and the locking portion 313c integrated with the first blade 311. In other words, the first position and the second position can be switched by operating the adjustment protrusion 313h to cause the locking portion 223 to climb over the convex portion 313e. Therefore, the load exerted when the locking portion 223 climbs over the convex portion 313e is applied to the hand operating the adjustment protrusion 313h, providing a comfortable clicking sensation. In addition, the length of the haircut by the first blade portion 31 can be adjusted with a single touch by simply switching the position of the adjustment protrusion 313h while holding the handle portion 2 in one hand, and safety is ensured even when switching, as the first blade tip 311a is covered by the first comb structure 312.

[0057] (4) By providing the length adjustment mechanism 313, the first comb structure 312 can cut hair at two different lengths, and in combination with the second comb structure 322, three different lengths can be achieved. This allows for various lengths of hair to be cut to suit the user's preferences for each area of ​​the hair being cut. The first blade portion 31 can function as a thinning blade for cutting relatively long hair, while the second blade portion 32 can function as a full-length shave blade for cutting relatively short hair. The angles of the first surface 351 and the second surface 352 relative to the first blade body 311 and the angles of the third surface 353 and the fourth surface 354 relative to the second blade body 321 are set to facilitate the realization of each function. This allows for the desired length to be adjusted for thinning or full-length shave.

[0058] (5) The range of hair that can be cut by the first blade portion 31 and the range of hair that can be cut by the second blade portion 32, that is, the dimension of the second blade portion 32 in the X-axis direction is smaller than that of the first blade portion 31. This makes it possible to use the second blade portion 32 when cutting a wide range of hair or when cutting a narrow range of hair.

[0059] In addition, since multiple lengths of hair can be cut with one hair cutter 1, there is no need to prepare multiple razors for different lengths. This also contributes to reducing waste, and corresponds to SDG Goal 12: Responsible Consumption and Production, Target 12.5: By 2030, significantly reduce waste generation through prevention, reduction, recycling and reuse.

[0060] (6) The hair cutter 1 has a three-part body, with the first blade portion 31, the second blade portion 32, and the handle portion 2 dividing the body of the hair cutter 1 into three parts. This allows the hair cutter 1 to be easily understood at a glance, while giving the impression of being multifunctional due to its complex shape. In addition, the head portion 3 and the handle portion 2 have a sharp hexagonal cross-sectional shape, making it a product that satisfies the preferences of users who prefer sharp products.

[0061] (Other embodiments) The present disclosure is not limited to the above-described embodiments and can be modified as appropriate within the scope of the claims. In the above embodiments, it goes without saying that the elements constituting the embodiments are not necessarily essential unless they are specifically stated as essential or are clearly considered essential in principle. Furthermore, in the above embodiments, when numerical values ​​such as the number, value, amount, and range of components are mentioned, they are not limited to the specific number unless they are specifically stated as essential or are clearly limited to a specific number in principle. Furthermore, in the above embodiments, when the shape, positional relationship, etc. of components are mentioned, they are not limited to the shape, positional relationship, etc. unless they are specifically stated or are clearly limited to a specific shape, positional relationship, etc. in principle.

[0062] (1) For example, in the above embodiment, the first surface 351 to the fourth surface 354 of the head portion 3, which are the surfaces that come into contact with the skin, are configured as flat surfaces that are inclined relative to the first blade body 311 or the second blade body 321. However, they may have shapes other than flat surfaces, such as curved surfaces that gently bulge toward the opposite side of the first center line L1. However, by configuring the parts of the first surface 351 to the fourth surface 354 that come into contact with the skin as flat surfaces, it becomes easier to adjust the angle of the first blade body 311 or the second blade body 321 relative to the skin.

[0063] Furthermore, the fifth surface 355 and the sixth surface 356 of the head portion 3 are also flat, but since these surfaces are not used as skin contact surfaces, their shapes are arbitrary, and they may be flat, curved surfaces that bulge outward from the second center line L2, or curved surfaces that are concave toward the second center line L2.

[0064] (2) Similarly, in the above embodiment, the surfaces connecting the portions of the first surface 211 to the fourth surface 214 of the grip portion 21 that are not the anti-slip grooves 21a are also flat, but they may have a shape other than flat, for example, a curved surface that gradually bulges out on the side opposite the first center line L1. However, if the first surface 211 to the fourth surface 214 are flat, it becomes easier to apply force when cutting hair.

[0065] Furthermore, the fifth surface 215 and the sixth surface 216 of the grip portion 21 are also flat, but since these surfaces are not areas where you want to place your finger F and apply pressure, their shapes are arbitrary, and they may be flat, curved surfaces that bulge out on the side opposite the first center line L1, or curved surfaces that are concave toward the first center line L1.

[0066] (3) In the above embodiment, the length adjustment mechanism 313 was provided to adjust the haircut length of the first blade portion 31, but the length adjustment mechanism 313 does not have to be provided. Also, the length adjustment mechanism 313 is configured to include the locking portion 223 and the locking portion 313c, but other configurations, such as a screw-type comb operating portion as shown in Japanese Patent No. 4504676, may be provided to enable length adjustment.

[0067] (4) In the above embodiment, the hair cutter 1 was used to cut the arms, legs, and VIO area, but it may be used to cut hair on any part of the body. For example, it is possible to cut hair to a length that suits the user's preferences, even in areas other than those mentioned in the above embodiment, such as relatively long hair for eyebrows and relatively short hair for armpits. [Explanation of symbols]

[0068] 1...hair clipper, 2...handle portion, 3...head portion, 21...gripping portion, 21a...groove, 22...tip portion, 23...rear end portion, 31...first blade portion, 32...second blade portion, 34...cover portion, 211-216...first surface to sixth surface, 221, 222...opening, 223...engaging portion, 224...slide guide, 224a...rail, 311...first blade body, 311a...first blade tip, 312...first comb structure, 312a...first comb teeth, 313...length adjustment mechanism, 3 13a...first clamping portion, 313b...second clamping portion, 313c...locking portion, 313d...first recessed portion, 313e...projecting portion, 313f...second recessed portion, 313h...adjustment projection, 321...second blade body, 321a...second blade edge, 321b...long hole, 322...second comb structure, 322a...second comb teeth, 341...first cover, 341a...through hole, 342...second cover, 342a, 342b...projection, 342c...engagement projection, 351 to 356...first surface to sixth surface

Claims

1. A hair cutter for adjusting the length of hair, A handle portion (2) is formed of a rod-shaped member with one longitudinal direction and has a tip portion (22) and a rear end portion (23) opposite to the tip portion; a head portion (3) disposed on the tip end side of the handle portion, The head portion is a first blade portion (31) including a planar first blade body (311) with a first cutting edge (311a) facing one side of the width direction, the direction being perpendicular to the longitudinal direction, and a first comb structure (312) including a plurality of first comb teeth (312a) covering the first blade body and arranged at first intervals (S1), the first blade portion (31) cutting hair that has passed through the first comb teeth with the first blade body; the second blade body (321) is flat and has a second cutting edge (321a) facing the other side in the width direction; and the second comb structure (322) has a plurality of second comb teeth (322a) covering the second blade body and arranged at a second interval (S2) narrower than the first interval, and the second blade portion (32) is shorter than the first blade portion and cuts hair that has passed through the second comb teeth with the second blade body in a range narrower than the haircut range of the first blade body, the first comb structure has peaks of the first comb teeth covering the first blade body that protrude in a normal direction of the first blade body, and valleys of the first comb teeth that expose the first blade body between the first comb teeth; and the second comb structure has peaks of the second comb teeth covering the second blade body that protrude in a normal direction of the second blade body, and valleys of the second comb teeth that expose the second blade body between the second comb teeth; a line connecting the portions of the peaks of each of the plurality of first comb teeth that protrude most from the first blade body is defined as a peak ridgeline, and imaginary planes that pass through the peak ridgelines of each of the plurality of first comb teeth on one side and the other side of the first blade body and are inclined relative to the first blade body are defined as a head first surface (351) and a head second surface (352), respectively; A line connecting the most protruding portions of the peaks of each of the plurality of second comb teeth from the second blade body is defined as a peak ridgeline, and imaginary planes that pass through the peak ridgelines of each of the plurality of second comb teeth on one side and the other side of the second blade body and are inclined with respect to the second blade body are defined as a head third surface (353) and a head fourth surface (354), respectively; the head first surface and the head second surface are disposed on one side and the other side of the first blade body in the first blade portion, respectively, and are inclined relative to the first blade body so as to approach each other toward the one direction side; the head third surface and the head fourth surface are disposed on one side and the other side of the second blade body in the second blade portion, and are inclined relative to the second blade body so as to approach each other toward the other direction side; The handle portion has a handle first surface (211) and a handle second surface (212) on one side and the other side of the first blade body, which are inclined relative to the first blade body so as to approach each other toward the one side, and a handle third surface (213) and a handle fourth surface (214) on one side and the other side of the second blade body, which are inclined relative to the second blade body so as to approach each other toward the other side.

2. 2. The hair cutter according to claim 1, wherein the first blade portion has a length adjustment mechanism (313) that moves the first cutting edge relative to the tips of the plurality of first comb teeth in a direction perpendicular to the longitudinal direction to adjust the length of the hair to be cut.

3. 2. The hair cutter of claim 1, wherein the first head surface and the first handle surface are parallel to each other or form an angle of less than 5 degrees, the second head surface and the second handle surface are parallel to each other or form an angle of less than 5 degrees, the third head surface and the third handle surface are parallel to each other or form an angle of less than 5 degrees, and the fourth head surface and the fourth handle surface are parallel to each other or form an angle of less than 5 degrees.

4. The head portion has a face between the head first face and the head third face as a head fifth face (355), and a face between the head second face and the head fourth face as a head sixth face (356), and the shape of a cross section with the longitudinal direction as a normal direction is a hexagon formed by the head first face to the head sixth face, 4. The hair cutter according to claim 1, wherein the handle portion has a surface between the handle first surface and the handle second surface as a handle fifth surface (215), a surface between the handle third surface and the handle fourth surface as a handle sixth surface (216), and a cross-sectional shape of the handle portion with the longitudinal direction as the normal direction is a hexagon formed by the handle first surface to the handle sixth surface.

5. The handle portion has a first center line (L1) along the longitudinal direction, and forms a hexagonal shape by the handle first surface to the handle sixth surface, with the first center line as the center, the head portion has a second center line (L2) along the longitudinal direction, and the head first surface to the head sixth surface form a hexagonal shape with the second center line as the center, 5. The hair cutter of claim 4, wherein the hexagonal shape of the handle portion and the hexagonal shape of the head portion are arranged such that a diagonal line (D2) passing between the head first surface and the head second surface and between the second center line and the head third surface and the head fourth surface intersects at 90 degrees with a diagonal line (D1) passing between the handle first surface and the handle third surface and between the first center line and the handle second surface and between the handle second surface and the handle fourth surface when viewed from the longitudinal direction.

Images