JP7340248B2 - hair cutter - Google Patents

Description

The present invention relates to a hair cutter.

The razor described in Patent Document 1 is elongated in one direction, and has blades at both ends in the longitudinal direction. As a result, the razor described in Patent Document 1 can use blades on both sides of the razor in the longitudinal direction, thereby improving convenience. The razor described in Patent Document 1 is configured such that a cap can be attached to each of the blades at both ends thereof.

Utility Model Publication No. 60-188577

In the razor described in Patent Document 1, when one blade is used, the other blade must be covered with a cap. That is, since it is conceivable that a user uses a razor by holding the periphery of the blade on the side that is not used, it is necessary to cover the blade on the side that is not used with a cap when using the razor. Therefore, in the razor described in Patent Document 1, the user is forced to attach and detach the cap, and there is room for improvement from the viewpoint of improving usability.

The present invention has been made in view of this background, and it is an object of the present invention to provide a hair cutter that is easy to use.

One aspect of the present invention includes a long portion;
a pair of blade holding parts formed on both sides of the elongated part in the extending direction;
a pair of blade members held by the pair of blade holding parts,
Each of the blade holding parts has a comb-shaped part having a plurality of slits opened on the blade tip side toward which the blade tip of the blade member to be held faces,
Each of the blade members is arranged within the comb-shaped portion so that the blade edge thereof is exposed in a deep position of the slit,
The cutting edge of the blade member held by one of the pair of blade holding parts is formed along the extending direction,
The cutting edge of the blade member held by the other of the pair of blade holding parts is formed along a direction perpendicular to the extending direction,
Each of the blade holders includes a main body resin part that constitutes the elongated part and the comb-shaped part of each of the blade holders and is made of one resin molded body, and each of the blade holders that is constituted by the main body resin part. The sides from which the comb-shaped parts protrude are the same side or opposite sides,
The total length of the main body resin portion is the total length of the elongated portion of the hair cutter.

The hair cutter of this aspect includes a pair of blade holding parts formed on both sides of the elongated part in the extending direction, and each blade holding part holds a blade member. Therefore, blades can be used on each side of one hair cutter. On the other hand, in a hair cutter provided with such a premise, when using one blade, it is conceivable that the periphery of the other blade is grasped and used.

Therefore, in the hair cutter of this aspect, each blade holding part has a comb-shaped part having a plurality of slits opened on the blade tip side toward which the cutting edge of the blade member to be held faces. Each blade member is disposed within the comb-shaped portion so that its cutting edge is exposed at a position deep within the slit. As a result, even if the user of the hair cutter grasps the blade holding portion, the user's fingers and the like are protected by the comb-shaped portion, so that they do not touch the blade tip. Thereby, for example, there is no need to use a cap that covers the blade member, and there is no need to perform work to attach and detach the cap at the hair cutter.

As described above, according to this aspect, it is possible to provide a hair cutter that is easy to use.

1 is a perspective view of a hair cutter in Example 1. FIG. FIG. 2 is a front view of the hair cutter of Example 1. FIG. 3 is a rear view of the hair cutter in Example 1. A sectional view taken along the line IV-IV in FIG. 2. A sectional view taken along the line V-V in FIG. 2. The bottom view of the hair cutter of Example 1. FIG. 2 is a plan view of the hair cutter of Example 1. The left side view of the hair cutter of Example 1. The right side view of the hair cutter of Example 1. A sectional view taken along the line AA in FIG. 8. A sectional view taken along the line XI-XI in FIG. 8. FIG. 3 is an exploded view of the main body resin part, the first blade member, and the first cover of Example 1. FIG. 3 is an exploded view of the main body resin part, the second blade member, and the second cover of Example 1.

In the hair cutter, the cutting edge of the blade member held by one of the pair of blade holding parts is formed along the extending direction of the elongated part, and the cutting edge of the blade member held by the other of the pair of blade holding parts is formed along the extending direction of the elongated part. The cutting edge of the blade member is formed along a direction perpendicular to the extending direction . In other words, one blade holder and the blade member held therein function as a so-called L-shaped razor, and the other blade holder and the blade member held therein function as a so-called T-shape razor. Configure it like this. In this case, one hair cutter can function as both an L-shape razor and a T-shape razor, improving usability.

Further, the hair cutter includes a main body resin part which constitutes a long part and a comb-like part of each blade holding part and is made of one resin molded body, and each blade holding part formed by the main body resin part. The sides from which the comb-like parts protrude are the same side or opposite sides. In this case, it is easy to improve the productivity of the main body resin portion. That is, since the main body resin part constitutes the elongated part and the comb-like part of each blade holding part, it is constructed as a relatively large member that constitutes substantially the entire hair cutter. Therefore, when the main body resin part is constituted by one resin molded body, the mold for manufacturing the main body resin part tends to be complicated. Therefore, by making the protruding sides of the comb-like parts of each blade holding part of the main body resin part the same side or opposite sides, the molding that forms the comb-like part of each blade holding part in the main body resin part The respective punching directions of the molds can be set in the same direction, making it easy to simplify the mold.

(Example 1)
Examples of the hair cutter will be described using FIGS. 1 to 13.
The hair cutter 1 of this example includes a long portion 2, a pair of blade holding portions 3, and a pair of blade members 4, as shown in FIGS. 1 to 3 and 6. A pair of blade holding parts 3 are formed on both sides of the elongated part 2. Each of the pair of blade members 4 is held by a mutually different blade holding part 3.

As shown in FIGS. 1 to 3 and 8, each blade holding part 3 has a comb-shaped part 30 having a plurality of slits s opened on the blade tip side toward which the cutting edge 40 of the blade member 4 to be held faces. Each blade member 4 is disposed within the comb-shaped portion 30 so that its blade edge 40 is exposed at a position deep within the slit s.

Hereinafter, this example will be explained in detail. In this example, the configuration of the hair cutter 1 as viewed from the outside, the configuration of each component that makes up the hair cutter 1, and the application of the hair cutter 1 will be explained in this order.

First, the configuration of the hair cutter 1 when viewed from the outside will be described.
As shown in FIG. 1, in the hair cutter 1 of this example, one blade holding part 3 (hereinafter referred to as the first blade holding part 31) and a blade member 4 held therein (hereinafter referred to as the first blade member 41) are provided. ) is configured as a so-called L-shaped razor. That is, the first blade holding portion 31 is formed such that the cutting edge 40 of the first blade member 41 to be held extends along the extending direction of the elongated portion 2 . The other blade holding part 3 (hereinafter referred to as the second blade holding part 32) and the blade member 4 held therein (hereinafter referred to as the second blade member 42) are configured as a so-called T-shaped razor. There is. That is, the second blade holding part 32 is formed so that the cutting edge 40 of the second blade member 42 to be held extends in a direction perpendicular to the extending direction of the elongated part 2.

The elongated part 2 is formed to connect the first blade holding part 31 and the second blade holding part 32. Hereinafter, the direction in which the first blade holding part 31 and the second blade holding part 32 are lined up will be referred to as the X direction, which is a direction perpendicular to the X direction, and the cutting edge 40 of the blade member 4 held by the second blade holding part 32. The extending direction is called the Y direction, and the direction perpendicular to both the X direction and the Y direction is called the Z direction.

The elongated portion 2 has a substantially rectangular columnar shape that is elongated in the direction along the X direction. A cross-sectional shape perpendicular to the extending direction of the elongated portion 2 is elongated in the Z direction, specifically, a rectangular shape. As shown in FIGS. 1 to 3, FIG. 6, and FIG. A non-slip recess 23 is formed. Note that the long abdominal surface 22 is the surface of the long portion 2 that faces the cutting edge 40 of each blade member 4 in the Z direction, and the long back surface 21 is the surface on the opposite side. The anti-slip recesses 23 are formed intermittently over substantially the entire area of the elongate portion 2 in the extending direction of the elongate portion 2 . The anti-slip recess 23 serves as a non-slip when the user grips the elongated portion 2. Note that the shape of the anti-slip recess 23 is not limited to that shown in this example.

As shown in FIGS. 1 to 3, patterned grooves 24 are formed on both side surfaces of the elongated portion 2 over substantially the entire area in the extending direction of the elongated portion 2. As shown in FIGS. The pattern grooves 24 are formed in a gentle wave shape extending in the direction in which the elongated portion 2 extends. Note that the pattern grooves 24 are provided mainly for the purpose of reducing thickness, preventing slipping, and improving the design, and it is also possible to adopt a configuration in which the pattern grooves 24 are not formed.

As shown in FIG. 3, a design recess 25 is formed on one side of the elongated portion 2 on one side of the pattern groove 24. As shown in FIG. The design recess 25 has a rectangular outer shape, and characters such as a company name, product name, product information, etc. can be engraved on the bottom of the design recess 25 using a mold. Note that it is also possible to adopt a configuration in which the design recess 25 is not formed. A first blade holding portion 31 is formed on one side of the elongated portion 2 .

As shown in FIGS. 1 to 3, the first blade holding portion 31 is formed to be elongated in the X direction. Although the first blade holding portion 31 extends in a direction slightly inclined with respect to the extending direction of the elongated portion 2, the first blade holding portion 31 is not limited to this, and may be formed parallel to the extending direction of the elongated portion 2, for example. You can leave it there.

As shown in FIGS. 1 to 3, the end edge 310 of the first blade holding part 31 opposite to the elongated part 2 in the X direction is formed in an arc shape with the center side in the Z direction bulging in the X direction. There is. Further, as shown in FIGS. 6 and 7, the edge portion 310 of the first blade holding portion 31 is formed such that a corner portion 310a when viewed from the Z direction has a curved surface shape (R shape). This can prevent a person from feeling discomfort (such as a feeling of pressure from a corner or the like) when touching the edge portion 310 of the first blade holding portion 31. Moreover, when the skin of the part of the body where the hair cutter 1 is used is thin and sensitive, it is also effective in preventing excessive irritation to the part. As shown in FIGS. 1 to 3, a comb-shaped portion 30 is formed on one side of the first blade holding portion 31 in the Z direction. Hereinafter, the comb-shaped part 30 of the first blade holding part 31 may be referred to as a first comb-shaped part 311, and the slit s of the first comb-shaped part 311 may be referred to as a first slit s1.

As shown in FIGS. 2 and 3, first slits s1 and first comb teeth 312 are alternately formed in the first comb-shaped portion 311 in the Z direction. The first slit s1 is open on one side in the Z direction. The first comb teeth 312 are formed in the shape of a protrusion that protrudes to one side in the Z direction, and partition between adjacent first slits s1 in the X direction.

As shown in FIGS. 4 and 5, the first comb teeth 312 are formed so that the width in the Y direction increases toward the root side in the Z direction. The protruding end portion 312a of the first comb tooth 312 is formed into a curved surface having no corners. That is, the protruding side end portion 312a of the first comb tooth 312 is formed in a curved shape (R shape) having no corners when viewed from the X direction as shown in FIGS. 2. As shown in FIG. 3, the shape seen from the Y direction is also formed in a curved shape (R shape) without corners. As shown in FIGS. 4 and 5, the protruding end portion 312a of the first comb tooth 312 has a radius of curvature of 1.0 mm or more, preferably 1.3 mm or more when viewed from the X direction. Further, as shown in FIGS. 2 and 3, the protruding end portion 312a of the first comb tooth 312 has a radius of curvature of 0.5 mm or more when viewed from the Y direction. As described above, since the protruding end 312a of the first comb teeth 312 is rounded, a person may feel uncomfortable when touching the protruding end 312a of the first comb teeth 312 (feeling of pressure from the protruding end 312a). etc.) can be prevented from feeling. Moreover, when the skin of the part of the body where the hair cutter 1 is used is thin and sensitive, it is also effective in preventing excessive irritation to the part.

As shown in FIGS. 2 and 3, at the position where the cutting edge 40 of the first blade member 41 exists in the Z direction, the width of each first comb tooth 312 is equal to the width of the first slit s1, or the width of the first slit s1 It has a size greater than the width of. Thereby, even if stress is generated in the first comb teeth 312 by, for example, a user pressing the tip of the first comb teeth 312, the rigidity can be ensured to withstand the stress.

As shown in FIGS. 2 and 3, on both sides of the first comb-shaped portion 311 in the Y direction, there is a first comb tooth 312 between adjacent first comb teeth 312, which is connected to the first slit s1 in series when viewed from the Y direction. A comb recess 313 is formed. As shown in FIGS. 4 and 5, the first comb recess 313 is formed at a position adjacent to the side opposite to the open side of the first slit s1, and the first comb recess 313 increases toward the open side of the first slit s1. It is formed to be a deep depression. Forming the first comb recess 313 has the effect of preventing stress acting on the first comb teeth 312 from becoming excessive. The first comb recess 313 also has the role of guiding hair to be shaved into the slit s1 when the hair cutter 1 is used, and the guided hair hits the cutting edge 40 of the first blade member 41 and is cut. Become. A first blade member 41 is held by a first comb-shaped portion 311 in the first blade holding portion 31 .

As shown in FIGS. 2 and 3, the first blade member 41 is arranged in such a manner that the side toward which the cutting edge 40 faces is the same side as the protruding side of the first comb teeth 312 of the first blade holding part 31. The first blade member 41 is arranged so that its cutting edge 40 is exposed in the region between adjacent first comb teeth 312 in the X direction, that is, in the first slit s1. That is, as shown in FIGS. 2 to 4, the first blade member 41 is not exposed to the outside in the region where the first comb teeth 312 are formed in the X direction, and as shown in FIGS. As shown, in the region in the X direction where the first slit s1 is formed, a portion of the first blade member 41 including the cutting edge 40 is exposed to the first slit s1.

As described above, the first blade member 41 is disposed within the first comb-shaped portion 311 so that its cutting edge 40 is exposed at a position deep within the first slit s1. The cutting edge 40 of the cutting member 4 is arranged in an area deep within the slit s to such an extent that it cannot be touched by a person's fingers. In this example, the cutting edge 40 of the first blade member 41 is located at a position farther back from the first slit s1 than the center position of the first slit s1 in the Z direction. In this example, the width of the opening end of each first slit s1 is approximately 1.5 to 3.0 mm, and the distance between the cutting edge 40 and the protruding end of the first comb tooth 312 in the Z direction is 2 mm. ~3mm.

As shown in FIG. 5, when viewed from the X direction, the exposed portion of the first blade member 41 is located inside the outer shape of the first comb teeth 312 adjacent to the exposed portion.

As described above, the first blade holding portion 31 and the first blade member 41 held therein constitute an L-shaped razor. As shown in FIGS. 1, 6, and 7, a second blade holder 32 is formed on the opposite side of the first blade holder 31 in the extending direction of the elongated portion 2.

The second blade holding portion 32 is formed wider than the elongated portion 2 so as to protrude to both sides in the Y direction when viewed from the Z direction. The dimension of the second blade holding portion 32 in the Y direction is 25 mm or less. As will be described later, the hair cutter 1 of this example is mainly used for treating pubic hair, and is configured to have a narrower width than, for example, a T-shaped razor for shaving men.

As shown in FIGS. 2 and 3, the second blade holding portion 32 has a rounded “dog” shape when viewed from the Y direction. The end of the second blade holding part 32 opposite to the side where the elongated part 2 is located when viewed from the Y direction is the first end of the first blade holding part 31 in the Z direction from the end of the elongated part 2. It is formed to protrude toward the same side as the side from which the comb teeth 312 protrude.

A second back surface 324 that is connected to the elongated back surface 21 of the elongated portion 2 in the second blade holding section 32 swells toward the side opposite to the first blade holding section 31 in the X direction and is rounded when viewed from the Y direction. It has a dogleg shape and has no corners. Here, for example, when the hair cutter 1 of this example is used for treating pubic hair as described later, the T-shaped razor of the hair cutter 1 is moved from the O zone, which cannot be seen directly, toward the V zone to treat the hair. At this time, the hair cutter 1 is moved so that the second back surface 324 of the hair cutter 1 is aligned with the skin. During this movement, it is also assumed that the angle of the hair cutter 1 with respect to the skin changes. Therefore, as described above, by forming the second back surface 324 into a rounded dogleg shape, the angle of the hair cutter 1 in contact with the skin changes when the hair cutter 1 is moved as described above. Even if the skin is irritated, irritation to the skin can be prevented.

Further, a second abdominal surface 325 of the second blade holding portion 32 that is continuous with the long abdominal surface 22 of the long portion 2 is formed in a planar shape substantially orthogonal to the X direction. The space between the second ventral surface 325 and the long ventral surface 22 of the long portion 2 is formed into a curved surface shape (circular arc shape in cross section) that smoothly connects them. This can prevent a person from feeling discomfort (such as a feeling of pressure from a corner or the like) when touching the second back surface 324 or the second ventral surface 325. Moreover, when the skin of the part of the body where the hair cutter 1 is used is thin and sensitive, it is also effective in preventing excessive irritation to the part.

As shown in FIGS. 6 to 9, a comb-shaped portion 30 is formed at the tip of the second blade holding portion 32. As shown in FIGS. Hereinafter, the comb-shaped portion 30 of the second holding portion may be referred to as a second comb-shaped portion 321, and the slit s of the second comb-shaped portion 321 may be referred to as a second slit s2.

As shown in FIGS. 8 and 9, second slits s2 and second comb teeth 322 are alternately formed in the second comb-shaped portion 321 in the Y direction. The second slit s2 is opened on the same side as the opening side of the first slit s1. The number of second slits s2 is smaller than the number of first slits s1, and the number of second comb teeth 322 is smaller than the number of first comb teeth 312. The second comb teeth 322 are formed in the shape of a protrusion that protrudes on the same side as the protruding side of the first comb teeth 312, and partition between the second slits s2 adjacent to each other in the Y direction.

As shown in FIGS. 10 and 11, the second comb teeth 322 are formed so that the width in the X direction increases toward the root side in the Z direction. The protruding end portion 322a of the second comb tooth 322 is formed into a curved surface having no corners. That is, the protruding end portion 322a of the second comb teeth 322 has a curved shape (R shape) when viewed from the Y direction, and a curved shape when viewed from the X direction as shown in FIGS. 8 and 9. It is also formed in a curved shape (R shape). As shown in FIGS. 10 and 11, the protruding end portion 322a of the second comb tooth 322 has a radius of curvature of 1.0 mm or more, preferably 1.5 mm or more when viewed from the Y direction. Further, as shown in FIGS. 8 and 9, the protruding end portion 322a of the second comb tooth 322 has a radius of curvature of 0.5 mm or more when viewed from the X direction. As described above, since the protruding end 322a of the second comb teeth 322 is rounded, a person may feel uncomfortable when touching the protruding end 322a of the second comb tooth 322 (feeling of pressure from the protruding end 322a). etc.) can be prevented from feeling. Moreover, when the skin of the part of the body where the hair cutter 1 is used is thin and sensitive, it is also effective in preventing excessive irritation to the part.

Further, as shown in FIG. 8, at the position where the cutting edge 40 of the second blade member 42 is present in the Z direction, the width of each second comb tooth 322 in the Y direction is equal to the width of the second slit s2 in the Y direction, Alternatively, it has a size greater than the width of the second slit s2 in the Y direction. Thereby, even if stress is generated in the second comb teeth 322, for example, when the user presses the tip of the second comb teeth 322, the rigidity can be ensured to withstand the stress.

As shown in FIGS. 8 and 9, on both surfaces of the second comb-shaped portion 321 in the X direction, there are two slits connected in series to the second slits s2 between adjacent second comb teeth 322 when viewed from the X direction. A comb recess 323 is formed. As shown in FIGS. 10 and 11, the second comb recess 323 is formed at a position adjacent to the side opposite to the open side of the second slit s2, and as the second slit s2 approaches the open side, It is formed to be a deep depression. Forming the second comb recess 323 has the effect of preventing stress acting on the second comb teeth 322 from becoming excessive. The second comb recess 323 also has the role of guiding hair to be shaved into the slit s2 when the hair cutter 1 is used, and the guided hair hits the cutting edge 40 of the second blade member 42 and is cut. Become. The second blade member 42 is held by the second comb-shaped portion 321 of the second blade holding portion 32 .

As shown in FIGS. 8 and 9, the second blade member 42 is arranged in such a manner that the side toward which the cutting edge 40 faces is the same side as the protruding side of the second comb teeth 322 of the second blade holding portion 32. The second blade member 42 is arranged so that its cutting edge 40 is exposed in the region between the adjacent second comb teeth 322 in the Y direction, that is, in the second slit s2. That is, as shown in FIGS. 8 and 10, the second blade member 42 is not exposed to the outside in the region where the second comb teeth 322 are formed in the Y direction, and as shown in FIGS. 8 and 11, In the region in the Y direction where the second slit s2 is formed, a portion of the second blade member 42 including the cutting edge 40 is exposed to the second slit s2.

As described above, the second blade member 42 is disposed within the second comb-shaped portion 321 so that its blade edge 40 is exposed at a position deep within the second slit s2. In this example, the cutting edge 40 of the second blade member 42 is located at a position farther back from the second slit s2 than the center position of the second slit s2 in the Z direction. In this example, the width of the opening end of each second slit s2 is approximately 1.5 to 3.0 mm, and the distance between the cutting edge 40 and the protruding end of the second comb tooth 322 in the Z direction is 2 mm. ~3mm.

As shown in FIG. 11, when viewed from the Y direction, the exposed portion of the second blade member 42 is located inside the outer shape of the second comb teeth 322 adjacent to the exposed portion. As described above, the second blade holding section 32 and the second blade member 42 held therein constitute a T-shaped razor.

Next, the configuration of each component that makes up the hair cutter 1 of this example will be explained.

As shown in FIGS. 12 and 13, the hair cutter 1 of this example is assembled with five members: a main resin part 5, a first blade member 41, a first cover 6, a second blade member 42, and a second cover 7. It becomes. The main body resin part 5 constitutes the elongated part 2 and a part of the comb-like part 30 of each blade holding part 3, and is constituted by one resin molded body. The sides from which the comb-like portions 30 of each blade holding portion 3 formed by the main body resin portion 5 project (that is, the side from which the slits s are opened) are the same side. The main body resin part 5 is configured as a resin member having the largest volume in the hair cutter 1.

As shown in FIGS. 4, 5, and 12, a first assembly recess 51 for assembling the first blade member 41 and the first cover 6 is provided at a portion of the main body resin portion 5 that constitutes the first blade holding portion 31. is formed. The first assembly recess 51 is formed at one end of the main body resin portion 5 in the X direction so as to be recessed in the Y direction. The first assembly recess 51 is also formed at a portion other than the tip of each first comb tooth 312. As shown in FIG. 12, a plurality of first engagement protrusions 511, some of which are raised in the Y direction, are formed within the first assembly recess 51. The first blade member 41 is positioned on the first engagement convex portion 511 .

The first blade member 41 has a substantially rectangular shape that is elongated in the X direction. The cutting edge 40 of the first blade member 41 is formed on the long side of the side from which the first comb teeth 312 protrude in the Z direction. The first blade member 41 includes a plurality of first through holes 411 that penetrate in the thickness direction (Y direction). The first blade member 41 is arranged within the first assembly recess 51 so that the first engagement protrusion 511 is inserted into the first through hole 411. In this example, some of the first engagement protrusions 511 of the plurality of first engagement protrusions 511 are inserted into some of the first through holes 411 of the plurality of first through holes 411. , the first blade member 41 is inserted into the first assembly recess 51. Then, with the first blade member 41 disposed in the first assembly recess 51, the first cover 6 is inserted into the first assembly recess 51.

When viewed from the Y direction, the outer shape of the first cover 6 has the same shape as the outer shape of the first assembly recess 51. As a result, as shown in FIG. 2, the first cover 6 is arranged so that the entire first cover 6 is substantially exactly fitted into the first assembly recess 51. The first assembly recess 51 is a region where the first slit s1 exists in the circumferential direction of the first cover 6 when the first cover 6 arranged in the first assembly recess 51 is viewed from the Y direction. It is formed so as to be enclosed from all areas other than the

As shown in FIG. 12, the first cover 6 is formed with a plurality of first engagement recesses 61 that engage with the plurality of first engagement protrusions 511 of the first assembly recess 51. Furthermore, a first protruding portion 611 for vibration welding, which will be described later, is formed in each first engagement recess 61 and is elongated in the longitudinal direction of each first engagement recess 61 .

Fixation between the main body resin part 5 and the first cover 6 is performed by vibration welding in a state where the first blade member 41 and the first cover 6 are arranged in the first assembly recess 51. That is, by vibration welding, the first cover 6 is welded to the first assembly recess 51 while melting the first convex strip 611 of the first cover 6. The first blade holding portion 31 holding the first blade member 41 is formed by such vibration welding.

Further, as shown in FIGS. 10, 11, and 13, a second assembly for assembling the second blade member 42 and the second cover 7 is provided at a portion of the main body resin portion 5 that constitutes the second blade holding portion 32. A recess 52 is formed. The second assembly recess 52 is formed at one end of the main body resin portion 5 so that the surface opposite to the elongated portion 2 is recessed toward the elongated portion 2 side. The second assembly recess 52 is also formed at a portion other than the tip of each second comb tooth 322.

As shown in FIGS. 10, 11, and 13, the second assembly recess 52 includes a distal end recess 521 forming a part of the second comb-like portion 321, and a second comb-like portion 321 in the distal recess 521. The proximal end recess 522 is formed on the opposite side to the protruding side and is deeper than the distal end recess 521.

As shown in FIGS. 10 and 13, the distal end recess 521 includes a plurality of second engagement protrusions 521a, some of which are raised in the normal direction of the bottom surface of the distal recess 521. As shown in FIGS. A second through hole 421 (described later) of the second blade member 42 is engaged with the second engagement convex portion 521a.

As shown in FIG. 13, the proximal recess 522 includes a pair of cylindrical portions 522a that partially protrude in the same direction as the protrusion direction of the second engagement protrusion 521a. A pin-shaped projection 712 formed on the second cover 7 is inserted into the pair of cylindrical portions 522a. Further, as shown in FIGS. 10 and 13, a plate-shaped recess 522b into which the tip of the plate-shaped protrusion 713 formed on the second cover 7 is inserted is formed between the pair of cylindrical parts 522a. An end 522c of the proximal recess 522 opposite to the distal recess 521 in the Z direction is open. The second blade member 42 is positioned at the second engaging convex portion 521a of the distal end side recess 521.

As shown in FIG. 13, the second blade member 42 has a rectangular shape that is elongated in the Y direction. The cutting edge 40 of the second blade member 42 is formed on the long side of the side from which the second comb teeth 322 protrude in the Z direction. The second blade member 42 includes a plurality of second through holes 421 that penetrate in the thickness direction thereof. The second blade member 42 is arranged within the distal end side recess 521 of the second assembly recess 52 so that the second engagement protrusion 521a is inserted into the second through hole 421. Then, the second cover 7 is inserted into the second assembly recess 52 with the second blade member 42 disposed in the distal end recess 521.

As shown in FIGS. 10 and 11, the second cover 7 has a substantially L-shape when viewed from the Y direction. That is, the second cover 7 is formed with an opposing wall 71 facing the bottom surface of the distal end recess 521 and a direction perpendicular to the opposing wall 71, and a distal end of the proximal recess 522 in the Z direction. It includes a side recess 521 and an orthogonal wall 72 that covers the opening on the opposite side. The peripheral edge of the second cover 7 (that is, the peripheral edge of the opposing wall 71 when viewed from the thickness direction of the opposing wall 71 and the peripheral edge of the orthogonal wall 72 when viewed from the thickness direction of the orthogonal wall 72) substantially the entirety thereof is arranged to face the second assembly recess 52.

As shown in FIG. 13, the opposing wall portion 71 is provided with a pin-like protrusion 712 and a plate-like protrusion 713 that stand on the same side as the orthogonal wall portion 72 extending. When assembling the second cover 7 into the second assembly recess 52, the pin-shaped protrusion 712 is inserted into the cylindrical part 522a of the proximal recess 522 of the second assembly recess 52, and the plate-shaped protrusion 713 is inserted into the plate-shaped recess 522b of the proximal end recess 522.

Further, a plurality of second engagement recesses 711 that engage with a plurality of second engagement protrusions 521a of the distal end side recess 521 are formed in the opposing wall portion 71. Furthermore, a second protruding portion 711a for vibration welding is formed in each second engagement recess 711. That is, in the same way as the fixing method between the main body resin part 5 and the first cover 6, the main body resin part 5 and the second cover 7 are also welded by vibration welding by melting the second convex strip part 711a. Ru. Note that the fixing between the main body resin part 5 and the first cover 6 is not limited to vibration welding, and, for example, high frequency welding, ultrasonic welding, bonding with an adhesive, a mechanical fitting method, etc. may be used.

Next, the application of the hair cutter 1 of this example will be explained.

The hair cutter 1 of this example is mainly used for treating pubic hair. More specifically, it may be used, for example, to treat women's pubic hair, or by a caregiver at a nursing care site to treat the pubic hair of a cared person. The main purpose of the hair cutter 1 of this example is not to shave the hair from the hairline, but to adjust the amount of hair (reduce the amount of hair). As described above, the distance between the cutting edge 40 of the first blade member 41 and the protruding side end of the first comb tooth 312 in the Z direction, and the distance between the cutting edge 40 of the second blade member 42 and the second comb tooth in the Z direction The distance between each of the protruding side ends of 322 is approximately 2 to 3 mm. Thereby, each cutting edge 40 does not directly contact the skin and cannot capture the hairline. Pubic hair has roles such as cushioning, moisturizing, dispersing pheromones, and preventing virus infiltration (preventing sexually transmitted diseases), so it is not recommended to shave all of it. In addition, by reducing the amount of hair, it is possible to reduce odor and discomfort during menstruation, reduce rashes caused by stuffiness, and suppress the adhesion of excrement, so that good hygienic effects can be obtained. Moreover, the effect of improving the appearance when wearing underwear or a swimsuit can also be obtained. The hair cutter 1 of this example can also be used to treat other body hair such as head hair and shank hair.

In the pubic hair treatment, the so-called V zone (V line), I zone (I line), and O zone (O line) of the human body are treated. The V-zone is an inverted triangular area surrounded by the bikini line of the lower abdomen of the human body. The O-zone is the area around the anus. The I zone is the area along the base of the foot from the lower end of the V zone to the O zone. For the V zone, an L-shaped razor is preferably used because it has a wide blade and can shave a wide area at once. Furthermore, since the I and O zones are difficult to see and difficult to reach with the hair cutter 1, a T-shaped razor is preferably used.

However, in order to use the L-shaped razor and the T-shaped razor properly in this way, conventionally it has been necessary to prepare both the L-shaped razor and the T-shaped razor.

Therefore, in the hair cutter 1 of this example, the first blade holding part 31 and the first blade member 41 are configured as an L-shaped razor, and the second blade holding part 32 and the second blade member 42 are configured as a T-shaped razor. has been done. Therefore, one hair cutter 1 can realize the functions of both an L-shaped razor and a T-shaped razor.

Here, when using the L-shaped razor of the hair cutter 1, the hair cutter 1 is held and used with one hand, for example. In this case, it is conceivable to hold the hair cutter 1 by wrapping the T-shaped razor (second blade holding part 32) in the hand and placing the index finger and thumb along the long part 2. At this time, for example, the little finger, ring finger, or middle finger may hit the tip of the second comb teeth 322 of the second blade holding part 32, but as described above, the second blade member 42 held by the second blade holding part 32, Since the blade edge 40 is disposed within the second comb-shaped portion 321 so as to be exposed at the deep position of the second slit s2, the blade edge 40 is prevented from being touched by the hand. When using the T-shaped razor of the hair cutter 1, for example, wrap the L-shaped razor (first blade holding part 31) in your hand and hold the hair cutter 1 with your index finger and thumb along the long part 2. It is possible to do so. At this time, for example, the little finger, ring finger, or middle finger may hit the tip of the first comb tooth 312 of the first blade holding part 31, but as described above, the first blade member 41 held by the first blade holding part 31, Since the cutting edge 40 is disposed within the first comb-shaped portion 311 so as to be exposed at the deep position of the first slit s1, the cutting edge 40 is prevented from being touched by the hand.

Next, the effects of this example will be explained.
The hair cutter 1 of this example includes a pair of blade holding parts 3 formed on both sides of the elongated part 2, and each blade holding part 3 holds a blade member 4. Therefore, blades can be used on each of both sides of one hair cutter 1. On the other hand, in the hair cutter 1 provided with such a premise, when using one blade, it is conceivable that the periphery of the other blade is grasped and used.

Therefore, in the hair cutter 1 of this embodiment, each blade holding part 3 has a comb-shaped part 30 having a plurality of slits s opened on the blade tip side toward which the cutting edge 40 of the blade member 4 to be held faces. Each blade member 4 is disposed within the comb-shaped portion 30 so that its blade edge 40 is exposed at a position deep within the slit s. As a result, even if the user of the hair cutter 1 grips the blade holding part 3, the user's fingers and the like are protected by the comb-shaped portion, and therefore do not touch the cutting edge 40. Thereby, for example, there is no need to use a cap that covers the blade member 4, and there is no need to perform work to attach and detach the cap in the hair cutter 1. Furthermore, since there is no need to use a cap, it is possible to reduce the number of parts.

Further, the cutting edge 40 of the blade member 4 (first blade member 41) held by one of the pair of blade holding parts 3 (first blade holding part 31) is formed so as to extend in the extending direction of the elongated part 2. The cutting edge 40 of the blade member 4 (second blade member 42) held by the other of the pair of blade holding parts 3 (second blade holding part 32) is perpendicular to the extending direction of the elongated part 2. It is formed in the direction of In other words, the first blade holding part 31 and the first blade member 41 held therein function as a so-called L-shaped razor, and the second blade holding part 32 and the second blade member 42 held therein function as a so-called L-shaped razor. It has the role of a so-called T-shaped razor. Therefore, one hair cutter 1 can function as both an L-shape razor and a T-shape razor, improving usability.

The hair cutter 1 also includes a main body resin part 5 which constitutes the elongated part 2 and the comb-like part 30 of each blade holding part 3 and is made of one resin molded body. The sides from which the comb-like portions 30 of each blade holding portion 3 protrude are the same side or opposite sides. In this case, it is easy to improve the productivity of the main body resin portion 5. That is, the main body resin part 5 constitutes the elongated part 2 and the comb-like part 30 of each blade holding part 3, so it is constituted as a relatively large member that constitutes almost the entire hair cutter 1. . Therefore, when the main body resin part 5 is constituted by one resin molded body, the mold for manufacturing the main body resin part 5 tends to be complicated. Therefore, by making the sides from which the comb-shaped parts 30 of each blade holding part 3 of the main body resin part 5 are the same or opposite to each other, the comb-like part of each blade holding part 3 in the main body resin part 5 is The respective punching directions of the molds constituting the portion 30 can be set in the same direction, making it easy to simplify the molds. Furthermore, in this example, the side of each blade holding part 3 from which the comb-like part 30 protrudes extends in the longitudinal direction of the cross-sectional shape (approximately rectangular shape) perpendicular to the extending direction of the long part 2 (i.e., (long side direction of the rectangle). Therefore, the elongated portion 2 and the comb-shaped portions 30 of each blade holding portion 3 can be drawn out in the same direction from the mold, making it easier to mold the main body resin portion 5.

As described above, according to this example, it is possible to provide a hair cutter that is easy to use.

The present invention is not limited to the embodiments described above, but can be applied to various embodiments without departing from the gist thereof.

For example, in the embodiment described above, one blade holder and the blade member held therein were configured as an L-shaped razor, and the other blade holder and the blade member held therein were configured as a T-shaped razor. Not limited. For example, if the blade member is arranged in the comb-like part so that the cutting edge is exposed in the deep position of the slit, an L-shaped razor can be formed at both ends of the elongated part, or a T-shaped razor can be formed at both ends of the elongated part. It is also possible to form a razor.

Further, in the above embodiment, each blade holding section holds one blade member, but the invention is not limited to this, and a plurality of blade members may be held. In this case, each of the blade edges of all the blade members held by each blade holder only needs to be exposed at a position deep within the slit.

Further, in the above embodiment, the hair cutter may be formed by forming an insert in which the main body resin part, the first cover, and the second cover are formed of an integral resin, and two blade members are arranged in the mold. good.

1 hair cutter 2 long part 3 blade holding part 30 comb-shaped part 4 blade member 40 cutting edge 5 main body resin part s slit

Claims (1)

a long part;
a pair of blade holding parts formed on both sides of the elongated part in the extending direction;
a pair of blade members held by the pair of blade holding parts,
Each of the blade holding parts has a comb-shaped part having a plurality of slits opened on the blade tip side toward which the blade tip of the blade member to be held faces,
Each of the blade members is arranged within the comb-shaped portion so that the blade edge thereof is exposed in a deep position of the slit,
The cutting edge of the blade member held by one of the pair of blade holding parts is formed along the extending direction,
The cutting edge of the blade member held by the other of the pair of blade holding parts is formed along a direction perpendicular to the extending direction,
Each of the blade holders includes a main body resin part that constitutes the elongated part and the comb-shaped part of each of the blade holders and is made of one resin molded body, and each of the blade holders that is constituted by the main body resin part. The sides from which the comb-shaped parts protrude are the same side or opposite sides,
The hair cutter , wherein the total length of the main body resin portion is the total length of the elongated portion .

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