Hair clipper

Abstract

To provide a hair clipper which can be used four times with new sharpness by one double-edged replaceable blade, stably holds the replaceable blade without damaging an unused blade edge where the blade edge is not exposed, and improves the sharpness by one step.SOLUTION: A double-edged replaceable blade 09 is built in a cutting tool storage part 10, and a holder 02 and a grip handle 06 forming a rotatable upper lid 03 and a cutting part 05 are provided, and the cutting tool storage part 10 is a substantially rectangular recessed part, and has a blade stop edge 11 on a short side and a relief edge 12 on a long side, and the cutting part 05 is formed by intermittently notching and exposing a blade edge from the cutting tool storage part 10. Both ends of the cutting tool housing part 10 on the cutting part side are asymmetrically arranged so that a part where the blade edge is exposed when the front surface of the double-edged replaceable blade 09 is arranged on the front side is housed in a non-exposed part when the back surface is arranged on the front side, and the inner surface shape of the upper lid 03 is brought into close contact with the double-edged replaceable blade 08 and fixed to the cutting tool housing part 10 by a screw member.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention is in the field of hand cutting tools and primarily relates to double-edged razor-type hair clippers. [Background technology]

[0002] The applicant invented the hair clipper disclosed in Patent Document 1, which has a blade that is housed within a holder and intermittently exposed, in order to improve the safety of the razor-type hair clipper and allow for flexible design cuts. However, the hair clipper disclosed in Patent Document 1 has a problem in that, because a double-edged replacement blade is housed in a blade tool storage compartment, which is a recessed section provided within the holder, the unused blade on the side where the blade is not exposed is pressed against the side of the recessed section when the hair clipper is used, causing damage to the blade. Therefore, the applicant invented the hair clipper according to Patent Document 2, in which "the upper part of the rectangular shape is made one step lower than the lower part, and blade stop edges are arranged on both ends of the upper longitudinal direction with the space between the blade stop edges as a relief edge for double-edged blades, and the center of the blade tool storage section stores a mountain-shaped double-edged blade," and the blade stop edges and relief edges prevent damage to the unused blade tip, and also stores a double-edged blade that is bent upward in a mountain shape in the center, and by closing the top lid the bent part is pressed, so that the blade tip can be held stably with a certain tension without loosening.

[0003] Furthermore, the invention of Patent Document 3, which relates to a replacement blade for a replaceable blade razor, is characterized in that "the clamping plates clamp the cutting edge of the blade plate with comb teeth formed on the front and back edges of the clamping plates while covering it, thereby forming alternately exposed portions where both sides of the cutting edge are exposed and non-exposed portions where one side of the cutting edge is covered by the comb teeth (excerpt from claim 1)," and "the width of the comb teeth and the width of the spaces between the comb teeth are formed to be approximately the same, and the clamping plates have windows through which the blade plate can be shifted in the direction of the cutting edge line to alternate between the exposed and non-exposed portions, and a locking portion provided at the blade portion corresponding to the window for locking and sliding the blade (excerpt from claim 3)," thereby allowing unused non-exposed portions to become new non-exposed portions, and has the effect of "restoring sharpness and doubling the life of the replacement blade (excerpt from specification 0016)."

[0004] However, if the structure of the invention of Patent Document 3 is used to improve the lifespan of the replacement blade in the hair shaver of the applicant's Patent Document 2, it is possible to narrow the width of the blade stop edge and provide a structure that "shifts the plate blade in the direction of the cutting edge line to alternate between the exposed and non-exposed portions," but assuming the use of double-edged replacement blades that are generally manufactured to compatible standards, the length of the blade stop edge is only a few millimeters, and further narrowing the gap would result in insufficient retention of the replacement blade in the holder, which is undesirable from the standpoint of safety for the user and the person being treated. In addition, the invention of Patent Document 3 is a razor solely intended for combing hair, and in order to use the invention of Patent Document 3 in the invention of Patent Document 2, it would be necessary to narrow the exposed portion of the cutting edge of the cutting part, which poses a problem that the function of the hair shaver would not be fully exhibited.

[0005] Furthermore, the hair clipper according to the present invention is a tool used for razor cutting, which has the advantage of cutting hair in a shaving motion, resulting in a thinner cross-section of the hair tips, a softer silhouette, and a hairstyle that is easier to style. However, it has the disadvantage that if the angle at which the razor blade contacts the hair is poor or if a dull razor is used, small irregularities will form on the cross-section of the hair, which can easily lead to breakage and split ends. For this reason, it is generally considered desirable for the blade to contact the hair at an angle of 45 degrees, allowing for a clean, sharp cut, without any irregularities on the cross-section of the hair tips. Therefore, it can be said that there is a constant demand for hair clippers with a shape and structure that makes it easy to maintain this 45-degree angle. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 1987-220897 A [Patent Document 2] Publication No. 1993-023185 [Patent Document 3] JP 1998-263219 A Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, the objective of the present invention is to provide a hair clipper that allows a user to perform razor cutting easily and stably with a single double-edged replacement blade that can be used four times with the same sharpness as a new one, and that does not damage the unused blade tip that is not exposed by being pressed against the side of the recess when the hair clipper is in use, ensuring that the replacement blade is held securely within the holder, ensuring good sharpness and the safety of the user and the person being treated. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems, the hair clipper according to the present invention has a double-edged replaceable blade for hair cutting housed in a blade tool storage section, and comprises a holder forming a top cover and a cutting section that can be rotated by a pivot, and a grip handle that extends from the holder, the blade tool storage section is a substantially rectangular recess with a blade stop edge on a short side and a relief edge on a long side, the substantially rectangular recess is provided in a position where the cutting edge of the double-edged replaceable blade on the cutting section side is exposed in the cutting section when the double-edged replaceable blade is stored, the blade stop edge is arranged to contact the non-cutting portions at both ends of the cutting edge of the double-edged replaceable blade, and the relief edges are arranged so that the cutting edge of the double-edged replaceable blade does not come into contact with the side of the substantially rectangular recess, and the cutting section is configured to prevent the cutting edge of the replaceable blade from contacting the side of the substantially rectangular recess, The blade storage section is configured with intermittent cutouts exposed from the storage section, the longitudinal front cutout surface being an approximately vertical surface, and the rear cutout surface being an inclined surface that continues from the upper end of the approximately vertical surface to the lower end of the approximately vertical surface at an angle of approximately 45 degrees to the approximately vertical surface, and both ends of the cutting section side of the blade storage section are asymmetrical so that the part where the cutting edge of the blade is exposed when one surface of the double-edged replaceable blade is placed is stored in the non-exposed part when the other back surface of the double-edged replaceable blade is placed facing up, the inside of the top lid is shaped to fit closely to the double-edged replaceable blade, and the double-edged replaceable blade is fixed to the top lid by a screw member through a screw groove that extends from the center of the top lid to the center of the blade storage section. In addition to the above features, the notched surface of the longitudinal rear inclined surface has a slope gradient of approximately 54 degrees relative to the cutting edge of the exposed double-edged replaceable blade. Furthermore, in addition to the above features, the grip handle has two recesses on the cutting portion side that are continuous with the holder side, and is rod-shaped with a curved portion on the back, and the position of the convex portion formed by the two recesses is the center of gravity. [Effects of the Invention]

[0009] When storing double-edged blades in the blade storage compartment of the hair clipper according to the present invention, by turning the blade upside down or front and back, all of the exposed cutting edges of the double-edged blade can be left unused, meaning that one double-edged blade can be used four times with the same sharpness as a new blade. This allows the double-edged blade to be used without waste, reducing maintenance costs and increasing efficiency, which is effective in achieving the SDGs. Furthermore, instead of changing the fixing method or fixing position of a double-edged blade, by changing the up-down direction or front-back direction of the blade, all of the exposed cutting edges of the blade can be left unused, which simplifies the structure and does not require new structures such as windows or locking parts as described in Patent Document 3. Furthermore, the effect of the invention described in Patent Document 2, in which the cutting edge of an unused cutting tool whose cutting edge is not exposed is not damaged by being pressed against the side of the recess when the hair clipper is used, and the safety of the user and the person being treated is ensured by the blade being held securely in the holder, can be maintained. The top cover is shaped to fit snugly against the double-edged blade, and not only can the double-edged blade be secured to the entire top cover using a screw member through a screw groove that runs from the center of the top cover to the center of the cutting tool storage section, but when the screw is tightened, the pressure on the inner surface of the top cover reaches just before the cutting edge of the double-edged blade, bringing all cutting edges of the cutting section into a taut state and improving the sharpness of the cut. Next, by providing a slope of approximately 54 degrees on the notched surface of the inclined surface on the rear side in the longitudinal direction of the cutting portion, the hair can be guided to the cutting point where the notched surface of the inclined surface on the rear side in the longitudinal direction of the cutting portion and the cutting edge intersect, with the cutting edge at an angle that is both 45 degrees when viewed from the front and 45 degrees when viewed from the side.This allows the hair to be cut cleanly, reduces damage to the ends of the hair, and keeps the cross-section of the ends thin, resulting in a styling that gives a soft impression. Finally, because the position of the index finger and middle finger when gripping the hair clipper of the present invention becomes the center of gravity, the angle of the cutting edge and the orientation of the holder are less likely to waver even when the entire hair clipper is moved up and down, and because the grip handle is rod-shaped with a curved section like a sword from the holder side to the end, the grip handle fits along the shape of the gripped hand, making it possible to keep the hair clipper more stable. [Brief explanation of the drawings]

[0010] [Figure 1] (1) Overall structure of the hair clipper according to the present invention [Figure 2] 1 is a top view of a hair clipper according to the present invention; [Figure 3] 1 is a front view of a hair clipper according to the present invention when a double-edged replacement blade is stored; [Figure 4] 1 is a front view of a hair clipper according to the present invention when the double-edged blade is not stored. [Figure 5] FIG. 1 is a partial enlarged view of the hair clipper according to the present invention when the surface of the double-edged blade is stored on the front side. [Figure 6] FIG. 1 is a partial enlarged view of the hair clipper according to the present invention when the back side of the double-edged replacement blade is stored on the front side. [Figure 7] FIG. 1 is a comparative diagram of a partial enlarged view of the hair clipper according to the present invention when the front and back surfaces of the double-edged blade are stored upwards. [Figure 8] A front view of the holder part of the hair clipper according to the present invention and an enlarged view of the cutting part. (1) No hair [Figure 9] An explanatory diagram of the 45-degree angle of the hair that hits the cutting edge (1) The angle of the cutting edge and hair as seen from the front (2) A-A cross section [Figure 10] Partially enlarged view of the cutting part of the hair clipper according to the present invention (2) With hair [Figure 11] Enlarged image of the tip of the hair [Figure 12] (2) Front view of the hair clipper according to the present invention. [Figure 13] (1) Effect of the center of gravity position [Figure 14] (2) Shape of the curved part of the grip handle DETAILED DESCRIPTION OF THE INVENTION

[0011] (Regarding Example (i) of the hair cutting tool according to the present invention) An embodiment of a hair cutting tool according to the present invention will be described below with reference to the accompanying drawings. As shown in Figures 1 and 2, the hair shaver 01 of the present invention is composed of a rectangular holder 02 and a rod-shaped grip 06 extending from the holder 02, the holder 02 has a cutting portion 05 on one side, and a top cover 03 having a recess 04 on its outer surface can be fixed with a cap screw 07 through a screw groove 13 in the center of the holder 02 as shown in Figure 3. Also, as shown in Figures 3 and 4, the top cover 03 is pivotally attached to the holder 02 by a pivot 08, and by rotating the top cover 03, a cutting tool storage section 10 for storing a double-edged replaceable blade 09 inside the holder 02 can be exposed, making it possible to replace the double-edged replaceable blade 09 and change its orientation upside down or front side. The blade storage section 10 is a substantially rectangular recessed portion provided inside the holder 02 and sized to allow the double-edged replaceable blade 09 to be fixed, and is provided at a position where the cutting edge of the double-edged replaceable blade 09 on the cutting part 05 side is exposed when the hair shaver is in use, and has a blade stop edge 11 on its short side and a relief edge 12 on its long side. The blade stop edge 11 is arranged so as to contact the non-cutting portions at both ends of the cutting edge of the double-edged replaceable blade 09, and the relief edge 12 is provided so that the cutting edge of the double-edged replaceable blade 09 does not come into contact with the side surface of the substantially rectangular recessed portion, so that even if a force is applied from the outside to the cutting edge on the cutting part 05 side toward the inside of the holder 02, the blade stop edge 11 acts as a stopper, and the cutting edge of the double-edged replaceable blade 09 can be kept from coming into contact with the side surface of the substantially rectangular recessed portion.

[0012] (About the shape of the inside of the top cover and how to fix the double-edged blade) The inside of the top cover 03 is shaped to fit closely to the double-edged replaceable blade, and a cap screw 07 is fastened to a screw groove 13 that extends from the center of the top cover 03 to the center of the cutting tool storage section 10, thereby making it possible to fix the double-edged replaceable blade in a crimped state against the inside surface of the top cover 03. This structure not only further enhances the effect of keeping the cutting edge of the double-edged replaceable blade 09 from contacting the side of the substantially rectangular recess, but also extends the force that crimps the double-edged replaceable blade 09 by the inside surface of the top cover 03 up to just before the cutting edge of the cutting section 05, so that all cutting edges of the cutting section 05 can be kept taut and tensioned without flexing, thereby improving the sharpness of cutting by one level. Furthermore, by providing this structure, the structure of the hair clipper in Patent Document 2, in which "the upper part of the rectangular shape is one step lower than the lower part by providing a step" and "the center part of the tool storage section stores a double-edged tool with a mountain-shaped shape", stores a double-edged tool with the center bent upward in a mountain shape, and by closing the top cover, presses the bent part, eliminating the need for the effect of maintaining a constant tension on the cutting edge without slack.

[0013] (About the cut part) 1, 2, and 3, the cutting portion 05 is configured by intermittently notching the cutting edge of the double-edged replaceable blade 09 from the cutting tool storage portion 10, with the notched surface on the front longitudinal side being nearly vertical and the notched surface on the rear side being an inclined surface that is at an angle of approximately 45 degrees to the vertical surface and continues from the upper end of the vertical surface to the lower end of the vertical surface, and is the portion where the exposed cutting edge of the double-edged replaceable blade 09 comes into contact with hair during haircutting. It is desirable that the width of the exposed cutting edge and the width of the portion of the cutting edge covered by the member are nearly the same and constant, except for the widths of both ends described below. However, as shown in Fig. 5, if the width of the exposed cutting edge is smaller than the width of the portion of the cutting edge covered by the vertical surface and the inclined surface, it is possible to solve the problem of being able to use one double-edged replaceable blade according to the present invention four times with the same sharpness as a new one.

[0014] (About changing the front and back of double-edged blades) Fig. 5 is an enlarged view of the hair shaver according to the present invention when the double-edged replaceable blade (front surface) 09a is stored with the front surface facing outward, with the double-edged replaceable blade (front surface) 09a facing outward and the cutting edge a14a positioned on the cutting portion 05 side. In this case, the exposed cutting edge is the black-painted position 15 of the cutting edge that is exposed when the double-edged replaceable blade (front surface) 09a, which is painted black, is stored on the front surface. From this state, if the double-edged replaceable blade (front surface) 09a is turned over in the left-right direction while maintaining the state in which the cutting edge a14a is positioned on the cutting portion 05 side, as shown in Fig. 6, the double-edged replaceable blade (rear surface) 09b becomes the front surface, and the black-painted position 15 of the cutting edge that is exposed when the double-edged replaceable blade (front surface) 09a is stored on the front surface is located entirely in the part of the cutting edge that is covered by the member. Figure 7 compares enlarged views of the cut portion 05 in Figures 5 and 6. The upper diagram shows the case where the double-edged replaceable blade (front surface) 09a is on the front side (Figure 5), and the lower diagram shows the case where the double-edged replaceable blade (back surface) 09b is on the front side (Figure 6). The areas indicated by the double-headed arrows in Figure 7 are all the same width. A common feature of each diagram is that the widths of the portions covered by the members at both ends of the double-edged replaceable blade 09 are asymmetrical, but when the width of the end where the portion covered by the member is smaller is added to the width of the exposed cutting edge 14 of the double-edged replaceable blade 09, it becomes the same as the width of the portion covered by the member at the other end. Due to this feature, when the double-edged replaceable blade 09 is turned left or right, the cutting edge of the double-edged replaceable blade 09 that was exposed when it was on the front side shifts by the exposed width, so a new cutting edge can be exposed simply by turning the double-edged replaceable blade 09 left or right.

[0015] (Advantages of this Example ) Therefore, by inverting the double-edged replaceable blade (front surface) 09a and the double-edged replaceable blade (back surface) 09b shown in Figures 5 and 6 left and right or up and down so that the cutting edge a14a or cutting edge b14b faces the cutting surface 05, a new cutting edge can be exposed four times. This allows the double-edged replaceable blade 09 to be used without waste, reducing maintenance costs and improving efficiency, which is effective in achieving the SDGs. Furthermore, the structure can be simplified without requiring new structures such as a window or locking portion as described in Patent Document 3, and the effect of the invention described in Patent Document 2, in which "the cutting edge of an unused cutting tool whose cutting edge is not exposed is not damaged by being pressed against the side of the recess during use of the hair clipper, and the replacement blade is securely held in the holder, ensuring the safety of the user and the patient," can be maintained.

[0016] (Regarding Example <ii> of the hair cutting tool according to the present invention) Another embodiment of the hair cutting tool according to the present invention will be described below with reference to the accompanying drawings. As shown in Figure 8, the hair shaver 01 of the present invention is a hair shaver 01 that, compared to the above-mentioned embodiment , has the added feature of having a slope gradient of approximately 54 degrees for the cutting edge 14 of the double-edged replaceable blade that is exposed at the notched surface 17 of the longitudinal rear inclined surface of the cutting part 05.

[0017] As mentioned in the background art, hair clippers are required to have a shape and structure that makes it easy to maintain a 45-degree angle when the blade contacts the hair. The typical method for achieving a 45-degree cross section of the hair tip when cutting with a razor is to comb the hair straight, tilt the blade at a 45-degree angle, and then move the holder parallel to the direction of the hair flow to cut. Here, there are two main ways to make the cross section of the hair tip at a 45-degree angle: one is to cut the hair with the hair tilted at a 45-degree angle to the left and right relative to the blade tip 14, as shown in the partially enlarged front view of the cutting part in Figure 9(1), and the other is to cut the hair with the hair tilted at a 45-degree angle to the front and back relative to the blade tip 14, as shown in the AA cross section of the cutting part seen from the side in Figure 9(2).General razor cutting can be said to be the latter. The hair shaver according to this embodiment has a slope gradient of approximately 54 degrees on the notched surface 17 on the longitudinal rear inclined surface in order to cut hair 18 at 45-degree angles in the left-right direction and 45-degree angles in the front-back direction. As shown in Figure 10, the cutting method is to guide the hair 18 to the cutting point 20 where the notched surface 17 on the longitudinal rear inclined surface intersects with the cutting edge 14, and then to cut the hair 18 by placing it along the slope gradient of approximately 54 degrees on the notched surface 17 on the longitudinal rear inclined surface. Cutting hair using this method results in a sharper cut than the commonly used razor cutting method, while also minimizing the occurrence of small irregularities on the cross section, thereby reducing damage to the ends of the hair after cutting. Furthermore, as shown in Figure 11, the cross section of hair a18a is oval, as shown in cross section a21a, and the ends are tapered, resulting in a soft-looking style. Conversely, if the cutout surface 17 on the rear longitudinal inclined surface is not inclined but is substantially vertical, the hair 18 tends to stand up along the substantially vertical surface, so the cutting edge enters nearly perpendicular to the hair fibers, resulting in a substantially circular cross section like cross section b21b of hair b18b, creating a heavy-looking end. Furthermore, while the most desirable slope calculated is 54 degrees 43 minutes 53 seconds, this is not a limitation.

[0018] (Regarding Example <iii> of the hair cutting tool according to the present invention) Other embodiments of the hair cutting tool according to the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 12, the hair shaver 01 of the present invention is different from the above-described embodiments (i) and (ii) in that the grip handle 06 has two consecutive recesses, recess a22a and recess b22b, on the cutting portion 04 side on the holder side of the grip handle 06, and is rod-shaped with a curved portion 24 extending from the holder side toward the end, and the position of the convex portion 23 formed by the two recesses is the center of gravity of the entire hair shaver 01.

[0019] As shown in Fig. 12, the hair shaver 01 according to this embodiment has a structure in which the weight balance of the entire hair shaver is achieved so that the position of the convex portion 23 formed by the two concave portions is the center of gravity. In order to accurately cut the cross section of the hair at the desired angle (45 degrees) by razor cutting, it is important that the angle of the cutting edge and the orientation of the holder 02 do not waver when moving the hair shaver 01 up and down to cut. By using this weight balance structure, as shown in Fig. 13, even if the entire hair shaver is moved up and down while holding it with three fingers, with the index finger in the concave portion a22a and the middle finger in the concave portion b22b and the thumb underneath, the holder 02 and the grip handle 06 do not waver up and down and can be maintained in the shape they are held in. For example, when held as shown in Figure 13, if the position of the center of gravity shifts toward the end of the grip handle 06, the holder 02 side becomes lighter, making the head of the holder 02 more likely to wobble upward. Conversely, if the position of the center of gravity shifts toward the holder 02 side, the holder 02 side becomes heavier, making the head of the holder 02 more likely to wobble downward. This requires unnecessary force to maintain the angle and position, making it difficult to move the hair clipper 01 stably. Furthermore, as mentioned above, it is possible to move the hair clipper 01 stably even when holding it with three fingers during treatment, but by providing the grip handle with a curve (curved portion 24) resembling the shape of a sword extending from the holder side to the end, the grip handle 06 can fit along the shape of the hand as shown in Figure 14, making it possible to keep the hair clipper even more stable. [Explanation of symbols]

[0020] 01 Hair cutting tools 02 Holder 03 Top lid 04 Recessed part 05 Cutting section 06 Grip handle 07 Cap Screw 08 Axis 09 Double-edged replacement blade 09a Double-edged replacement blade (surface) 09b Double-edged replacement blade (reverse side) 10 Cutting tool storage section 11 Blade stopper edge 12 Escape route 13 Thread groove 14 Cutting edge 14a Cutting edge a 14b Cutting edge b 15. The black painted position of the blade edge that is exposed when the double-edged blade is stored with the surface facing up. 16 Notched surface of the vertical surface at the end of the longitudinal direction 17 Notched surface of the longitudinal rear inclined surface 18 Hair 18a Haira 18b Hair b 19 Angle of hair that hits the cutting edge (45°) 20 cut points 21 Cross section of hair 21a Cross section of hair a 21b Cross section of hair b 22 recess 22a Recess a 22b Recess b 23 Convex part 24 Warped part 25 Cutting Direction

Claims

1. The double-edged hair cutting blade is housed in the blade storage section, and the holder forms a rotatable top cover and cutting section by a pivot, and a grip handle is extended from the holder. The cutting tool storage portion is a substantially rectangular recess having a cutting tool stop edge on a short side and a relief edge on a long side, The substantially rectangular recess is provided at a position where a cutting edge of the double-edged replaceable blade on the cutting portion side is exposed in the cutting portion when the double-edged replaceable blade is stored, The blade stop edge is disposed so as to contact the non-edged portions at both ends of the cutting edge of the double-edged replaceable blade, The relief edge is provided so that the cutting edge of the double-edged replaceable blade does not come into contact with the side surface of the substantially rectangular recess, The cutting portion is formed by intermittently notching the cutting edge of the replaceable blade from the cutting tool storage portion, and the notched surface on the front side in the longitudinal direction is a substantially vertical surface, and the notched surface on the rear side is an inclined surface that is at an angle of approximately 45 degrees with respect to the substantially vertical surface and continues from the upper end of the substantially vertical surface to the lower end of the substantially vertical surface, The cutting portion side ends of the blade storage portion are asymmetrically arranged so that the portion where the cutting edge of the blade is exposed when one surface of the double-edged replaceable blade is placed on the front side is stored in the non-exposed portion when the other back surface of the double-edged replaceable blade is placed on the front side, The inside of the upper cover is shaped to fit closely to the double-edged blade, and the double-edged blade is fixed to the upper cover by a screw member through a screw groove that extends from the center of the upper cover to the center of the cutting tool storage section. A hair cutting tool characterized by the above.

2. 2. The hair shaver according to claim 1, wherein the notched surface of the longitudinal rear inclined surface has a slope gradient of approximately 54 degrees relative to the cutting edge of the exposed double-edged replaceable blade.

3. 3. The hair clipper according to claim 1, wherein the grip handle has two recesses on the cutting portion side that are continuous with the holder side, and is rod-shaped with a curved portion on the back side, and the position of the convex portion formed by the two recesses is the center of gravity.

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