WO2011043551A2 - 경사곡선날형 손톱깎이 날체의 제조방법과 그로부터 만들어진 날체 및 그러한 날체를 갖는 손톱깎이 - Google Patents
경사곡선날형 손톱깎이 날체의 제조방법과 그로부터 만들어진 날체 및 그러한 날체를 갖는 손톱깎이 Download PDFInfo
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- WO2011043551A2 WO2011043551A2 PCT/KR2010/006528 KR2010006528W WO2011043551A2 WO 2011043551 A2 WO2011043551 A2 WO 2011043551A2 KR 2010006528 W KR2010006528 W KR 2010006528W WO 2011043551 A2 WO2011043551 A2 WO 2011043551A2
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- blade
- nail clipper
- curved
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- inclined surface
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D29/00—Manicuring or pedicuring implements
- A45D29/02—Nail clippers or cutters
Definitions
- the present invention relates to a nail clipper, and in particular, a manufacturing method capable of mass-producing a nail clipper blade having an inclined curved blade that accurately engages with a polishing error regardless of a grinding error, and a blade made therefrom, and such a blade. It relates to a nail clipper having a.
- the nail clipper is formed of an inclined surface in which upper and lower blades constituting the blade are symmetrical with each other, and these upper and lower inclined surfaces are formed in a slightly concave curved surface having the same curvature.
- the method of manufacturing the upper and lower blades of such a configuration is made by simultaneously grinding the upper and lower blades by using a polishing body having a radius that matches the curvature of the blade tip engaged horizontally.
- FIG. 1 to 5 are schematic diagrams showing the types of engagement of the upper and lower blades of the nail clipper classified by type.
- Fig. 1 shows the configuration of upper and lower blades in which the blade is engaged with a curve A-B-C on the X-Y plane as the most common prior art nail clipper. Symbols A and C indicated in the figures are the ends of both blades and B is the center of the blade.
- Fig. 2 shows a configuration of the upper and lower blades in which a blade is engaged with a straight line (A-B-C) on the X axis as a nail clipper of the prior art.
- the upper and lower blades in the prior art is a concave curved surface when viewed in plan view (Fig. 1 (d)) can be cut round the nail.
- the upper and lower blades are engaged with each other in a straight line. Therefore, a problem arises because it is necessary to cut round curved nails with the upper and lower edges engaged horizontally in a straight line.
- Korean Patent No. 10-0674475 (2007.1.19) and International Patent Publication WO / 2007/081157 (2007.07.19) filed by the present applicant, there is a method of manufacturing the arc nail clipper blade and the nail clipper blade and nail clipper.
- This shows the configuration of the upper and lower blades in which blade engagement (A-B-C) occurs in a vertical curve on the X-Z vertical plane, as shown in FIG.
- A-B-C blade engagement
- This relates to a method for producing a two-dimensional vertical curved blade which is also referred to in the present invention. It consists of an upward curved shape when the upper and lower blades of the interlocked blades are seen from the front.
- the upper and lower blades are curved upward, and at the same time, a curved blade having a three-dimensional structure inclined slightly to the rear in the handle direction, that is, the longitudinal direction of the blade, can be considered. .
- this is only an idea and it has been considered technically impossible to produce curved blades with such a geometry.
- Korean Patent Publication No. 10-2004-0043581 (2004.5.24), Japanese Utility Publication No. 49-8181 (1974.1.24), Japanese Utility Publication No. 49-120419 (1974.10.16), Japanese Utility Publication SO 52-66577 (1977.5.17), Japan Utility Disclosure SO 51-119970 (1977.9.12), Japan Utility Disclosure SO 54-98369 (1979.7.11), Japan Utility Disclosure SO 54-116468 (1979.8.15) ), Japanese Utility Model Publication No. 2005-74135 (March 24, 2005), Japanese Utility Model Publication No. 01-145305 (1989.10.5), US Design Patent Des. 371,636 (1996.7.9).
- US design patent Des. 371,636 also shows that the upper and lower edges of the nail clippers form a sloped surface.
- this relates to the design, which is the external shape of the nail clipper, and there is no mention of the technical method of how such an inclined curved blade can be produced.
- polishing process of a blade in a nail clipper manufacturing process is grind
- the upper and lower blades should be made to mesh with each other exactly.
- deviations inevitably occur in each polishing depth due to jigs, working conditions, and skill of the operator.
- polishing work of a nail clipper blade is divided into manual, semi-automatic, and fully automatic.
- a polishing roller having a radius suitable for the curvature of the curved surface of the tip of the blade portion is generally used.
- Manual polishing has a big difference in the polishing result according to the skill of the operator.
- Semi-automatic polishing and autopolishing produce various variations depending on the jig deviation, the transfer mechanism variation, or the abrasive wear. As such deviations exist, the center of the upper and lower blades or the gap between both edges of the upper and lower blades occur after polishing, and as a result, a product of a desired quality cannot be obtained.
- the present invention has been made to solve the problems of the prior art as described above, the main object of the present invention is to actually mass-produced by analyzing the inclined curved blade having a three-dimensional structure that was conventionally proposed only by design geometrically It is to provide a method for producing a slanted curved nail clipper blade.
- Another object of the present invention is to have a three-dimensional structure corresponding to the curved surface of the nail and a method of producing a slanted curved nail clipper blade having an inclined curved blade to smoothly cut the end of the nail along the curved surface without damaging the nail To provide.
- Shapes of the lower inclined surfaces become the inner inclined surfaces of the nail clipper blades respectively, using the abrasive of the radius Rg to position the abrasive shaft and the blade at a right angle, and simultaneously polish the leading edges of the upper and lower inclined surfaces to be curvature Ra. And forming an upper oblique curved edge having an oblique curve and a lower oblique curved edge having an oblique curve having a curvature Ra.
- the step of obtaining an inclination curve having a curvature Ra comprises first determining the curvature Rn seen from the front of the nail clipper in response to the curvature of the nail, and according to the conditions relating to the inclination angle? It is characterized by obtaining the curvature Rb of the inclined curved surface to form the shape of the upper inclined curved surface and thereby obtaining the inclined curve having the curvature Ra.
- the curvature Rb of the upper inclined surface of the nail clipper is first determined to form a shape of the upper inclined surface, and then the inclination angle ⁇ 1 of the inclined surface and the blade width W and the radius Rg of the abrasive body.
- the inclination curve of curvature Ra is calculated
- the method for producing a bevel blade nail clip blade according to the present invention is characterized in that the upper blade and the lower blade are integrally molded at both ends of the metal plate material, and the upper and lower bevel blade blades are bent to face each other.
- a method of manufacturing a curved blade nail clipper blade the other ends of the upper blade and the lower blade are bonded to each other using a joining means, the joining means, spot welding, rivet bonding, clinching (clinching), Eyelet bonding, brazing bonding, doping (dovetailing), it is characterized in that any one of bending.
- An inclined curved nail clip blade includes: an upper blade having a downwardly inclined surface at one tip;
- a nail clipper blade comprising: a lower blade configured to cut a nail in cooperation with an upper blade while having an upwardly inclined surface corresponding to an inclined surface of the upper blade at one end, wherein the upper and lower blades are any of the above-described manufacturing methods. It is characterized by having an upper and lower oblique curved blade manufactured.
- Curved nail clipper according to the present invention, the upper blade having a downward inclined surface at one end; A lower blade configured to cut the nail in cooperation with the upper blade while having an upwardly inclined surface corresponding to the inclined surface of the upper blade at one tip; And a lever for applying pressure to the upper and lower blades for cutting the nail, wherein the upper and lower blades have upper and lower inclined curved blades manufactured by any of the above-described manufacturing methods. do.
- An inclined curved nail clipper according to the present invention is characterized in that the upper and lower blades have a collecting portion for collecting nails that are cut and scattered around.
- the support shaft hole is formed in the upper and lower blades, respectively, between the upper blade and the lever, the body is inserted and coupled through the support shaft inserted into the support shaft hole, the body is The upper and lower blades integrally formed are freely rotatably coupled.
- the inclined curved nail clipper has an upper blade having a downward inclined surface at one tip, and an upwardly inclined surface corresponding to the inclined surface of the upper blade at one tip so as to be rotatable about the upper blade and the rotational axis.
- the inclined surface of the upper blade is formed a concave inclined upper oblique curved blade of a flat or constant curvature;
- the inclined surface of the lower blade is formed with a planar or inclined convex lower inclined blade corresponding to the upper inclined curve blade formed on the flat or concave inclined surface of the upper blade;
- the distal end portion of the lower blade is characterized in that it is configured to cut the nail by pressing the upper and lower inclined curve blade while acting as a lever.
- the manufacturing method of the inclined curved blade type nail clipper blade of the present invention it is possible to create a three-dimensional inclined curved blade that the nail clipper blade is formed so that the upper and lower blades are accurately engaged with the inclined surfaces of the upper and lower blades facing each other. .
- the user can remove the conventional problem of damaging the nail by pressing and cutting the nail horizontally, and at the same time can cut the tip of the nail slightly rounded and smooth.
- Figure 1 is a general prior art nail clipper
- Figure 1 (a) schematically shows the upper and lower blades in the XYZ three-dimensional space in which the blade is engaged in a horizontal curve (ABC) on the XY plane
- Figure 1 (b) Is a front view of an interlocking blade
- FIG. 1 (c) is a perspective view
- FIG. 1 (d) is a top view
- FIG. 1 (e) is a right side view.
- Figure 2 is a nail clipper of the prior art
- Figure 2 (a) schematically shows the upper and lower blades in the XYZ three-dimensional space in which the blade is engaged in a straight line (ABC) on the X axis
- Figure 2 (b) Fig. 2 (c) is a perspective view
- Fig. 2 (d) is a top view
- Fig. 2 (e) is a right side view.
- Figure 3 is a conventional nail clipper
- Figure 3 (a) schematically shows the upper and lower blades in the XYZ three-dimensional space that the blade is engaged with the vertical curve (ABC) on the XZ vertical plane
- Figure 3 (b) Fig. 3 (c) is a perspective view
- Fig. 3 (d) is a top view
- Fig. 3 (e) is a right side view.
- FIG. 4 is an inclined curved nail clipper according to the present invention
- the upper inclined plane is a plane
- Figure 4 (a) shows that the blade is engaged in the form of an inclined curve (ABC) in XYZ three-dimensional space
- Figure 4 ( b) is a front view of an interlocking blade
- FIG. 4 (c) is a perspective view
- FIG. 4 (d) is a top view
- FIG. 4 (e) is a right side view.
- FIG. 5 is an inclined curved nail clipper according to the present invention
- the upper inclined surface is a curved surface
- Figure 5 (a) shows that the blade is engaged in the form of an inclined curve (ABC) in XYZ three-dimensional space
- Figure 5 ( b) is a front view of an interlocking blade
- FIG. 5 (c) is a perspective view
- FIG. 5 (d) is a top view
- FIG. 5 (e) is a right side view.
- FIG. 6 is a partial perspective view illustrating in detail the configuration of the upper and lower inclined curved blade of the inclined curved nail clipper according to the present invention
- Figure 6 (a) shows the upper and lower blades
- Figure 6 (b) shows that the inclination curves ABC of the upper and lower blades are inclined in the Y direction in the XYZ three-dimensional space
- FIG. 6 (d) shows that the upper inclination curve blades are formed inside the upper blade.
- 6 (e) shows that a lower bevel curve blade is formed inside the lower blade.
- FIG. 7 is a perspective view illustrating a nail clipper coupled to a blade having an inclined curve blade according to an embodiment of the present invention so that the blade and the lever can be freely rotated through a support shaft.
- FIG. 8 is a perspective view illustrating a nail clipper having a blade having an inclined curve according to another embodiment of the present invention coupled with a lever through a support shaft.
- FIG. 9 is a perspective view illustrating a nail clipper having a spoon-shaped collecting portion formed on a blade having an inclined curve according to another embodiment of the present invention.
- FIG. 10 is a perspective view illustrating a flat nail clipper each having an inclined curve blade formed on a front slope of an upper and lower blades according to another embodiment of the present invention.
- FIG. 11 is a perspective view of a blade having an inclined curved blade according to the present invention, the upper and lower blades are integrally formed by bending.
- FIG. 12 illustrates a state in which the upper and lower inclined curved blades of the blade of FIG. 11 are closely engaged with each other.
- FIG. 12 (a) is a front view
- FIG. 12 (b) is a top view
- FIG. 12 (c) is a right surface
- Fig. 12 (d) is a bottom view.
- Fig. 13 is a schematic perspective view for explaining the principle of formation of the inclined curved blade according to the present invention, showing the inclined curve obtained when the inclined surface of the blade is in contact with the abrasive body.
- FIG. 14 is a schematic view illustrating the formation principle of the upper and lower blades of the inclined curved blade according to the present invention. It is shown to form a surface to form a lower slope.
- FIG. 15 is a diagram for analyzing the geometry of an inclined curved blade according to the present invention
- FIG. 15 (a) is a side view showing the inner side surface of the tip of the upper and lower blades
- FIG. 15 (c) is a plan view
- FIG. 15 (d) is a bottom view
- FIG. 15 (e) shows a curvature of the upper inclined surface.
- FIG. 16 illustrates an example in which the upper and lower blades shown in FIG. 15 are further polished by 0.3 mm
- FIG. 16 (a) is a side view showing the inner side of the tip of the upper and lower blades
- FIG. ) Is a front view showing the upper and lower inclined curved blades engaged with each other from the outside
- FIG. 16C is a plan view
- FIG. 16D is a bottom view.
- Figure 4 (a) shows the inclined curved nail clipper according to the present invention, the blade is engaged in the form of the inclined curve (ABC) in XYZ three-dimensional space
- Figure 4 (b) is a front view of the interlocking blade
- Figure 4 (c) is a perspective view
- FIG. 4 (d) is a plan view showing that the inclined surface of the upper blade is flat
- FIG. 4 (e) is a right side view.
- Fig. 5 (a) shows an inclined curved nail clipper according to the present invention in which the blade is engaged in the form of an inclined curve (ABC) on the XYZ three-dimensional surface
- Fig. 5 (b) is a front view of the interlocked blade
- 5 (c) is a perspective view
- FIG. 5 (d) is a plan view showing that the inclined surface of the upper blade is a curved surface
- FIG. 5 (e) is a right side view.
- FIG. 6 shows in detail the configuration of the upper and lower blades of the nail clipper shown in FIG. 6 (a) shows that the upper inclined curved edge 53 according to the present invention is disposed on the upper inclined surface 51 of the upper blades 11, 21, 31, and 41, and the lower portion of the lower blades 12, 22, 32, and 42. It is shown that the inclined surface 52 is provided with a lower bevel curve blade 54 according to the present invention. That is, as shown in FIG. 6 (b), both ends of the upper inclined curved edge 53 contact with the upper inclined surface 51 at points A and C on the X axis, and the upper inclined curved edge 53 It shows that the center point B is an inclined curve blade which is inclined in the Y-axis direction in XYZ three-dimensional space.
- the lower inclined surface 52 contacts both ends of the lower inclined curved edge 54 at points A and C on the X-axis, It shows that the center point B is an inclined curve blade which is inclined in the Y-axis direction in XYZ three-dimensional space.
- Fig. 6 (d) is an inverted upper blade of Fig. 6 (b), viewed from the inside, and shows that the upper inclined curved edge 53 formed of the A-B-C curve on the upper inclined surface 51 is formed.
- Fig. 6 (e) shows the lower blade of Fig. 6 (c) as viewed from the inside, and shows that the lower inclined curved edge 54 made of the A-B-C curve is formed on the lower inclined surface 52.
- the upper and lower oblique curved edges 53 and 54 according to the present invention as shown in Fig. 6 (d) and 6 (e), the ABC curve formed in the XYZ three-dimensional space as described above, It can be seen that it is formed to extend to the upper and lower inclined surfaces (51, 52), respectively, which will be described later in detail with reference to Figs.
- the nail clipper 100 includes a nail clipper body 120 having a support shaft hole 111 formed at one distal end thereof. Under the body 120, while having a support shaft hole 13 corresponding to the support shaft hole 111, the blade 10 according to the present invention via the support shaft 110 is rotatably coupled freely. . The upper end of the support shaft 110 is rotatably coupled to the lever 130 for applying the force required for the cutting action of the nail by pressing the blade 10 in the principle of the lever 120 through the body 120.
- the blade 10 is formed so that the upper blade 11 and the lower blade 12 face each other.
- the inclined surface 51 is formed to be downward at a predetermined angle.
- the downwardly inclined surface 51 (hereinafter referred to as the upper inclined surface) is provided with an inclined upper curved blade 53 according to the present invention described later.
- the tip of the lower blade 12 is formed to correspond to the upward inclined surface 52 (hereinafter referred to as the lower inclined surface) facing the upper inclined surface 51.
- the lower inclined surface 52 is provided with an inclined lower inclined curve blade 54 according to the present invention to be described later corresponding to the upper inclined curve blade 53.
- the blade 10 is prepared by forming an upper blade 11 and a lower blade 12 at both ends of the metal plate member extending in the longitudinal direction, respectively.
- the inclined surfaces 51 and 52 are bent to face each other with respect to the imaginary center line in the longitudinal direction of the upper and lower blades 11 and 12. Accordingly, when the upper and lower blades 11 and 12 are pressed using the lever 130, the upper and lower blades 11 and 12 are engaged with or separated from each other due to the elasticity of the metal plate, and the upper and lower inclined curved blades ( 53, 54) to cut the nails.
- the nail clipper blade 10 is configured to be freely rotatable 360 degrees with respect to the body 120 around the support shaft 110.
- FIG. 8 is a perspective view of a nail clipper 200 according to another embodiment of the present invention.
- This nail clipper 200 applies the inclination curve blades 53 and 54 which concern on this invention to a conventional nail clipper. That is, the nail clipper blade 20 is divided into an upper blade 21 and a lower blade 22.
- the inclined curved edges 53 and 54 according to the present invention are formed on the tip inclined surfaces 51 and 52 of the upper and lower blade bodies 21 and 22, respectively.
- the rear ends of the upper and lower blades 21 and 22 are joined by conventional bonding means such as spot welding, rivet welding, clinching, eyelet bonding, brazing bonding, dovingtailing, bending, and the like.
- Lower blades 21, 22 are integrally coupled to each other.
- the blade 20 is coupled to the lever 230 through the support shaft 210 inserted through the support shaft hole 23, it is configured to cut the nail by pressing the inclined curve blades (53, 54). .
- FIG. 9 is a perspective view of the nail clipper 300 according to another embodiment of the present invention, which is a more useful modification of the nail clipper of FIG. That is, the nail clipper 300 is formed such that the spoon-shaped collecting portions correspond to each other at the front end portions of the upper and lower blades 31 and 32 of the nail clipper 30 having the inclined curve blades 53 and 54 according to the present invention. And collect the cut nails. Therefore, the nail clipper 300 having such a configuration can effectively prevent the cut nails from scattering around and provide a sanitary environment.
- the blade 30 is coupled to the blade 30 via the support shaft 310 penetrating the support shaft hole 33, and is configured to press the slope curves 53 and 54 to cut the nail.
- FIG. 10 is a perspective view of a nail clipper 400 according to another embodiment of the present invention, which is a slim nail clipper called a flat nail clipper.
- the nail clipper blade 40 is divided into an upper blade 41 and a lower blade 42.
- inclined curved edges 53 and 54 according to the present invention as described above are formed, respectively.
- These upper and lower blades 41 and 42 are rotatably coupled around the rotational axis, that is, the pin 410, at positions adjacent to the inclined surfaces 51 and 52. Therefore, the nail clipper 400, while the distal end portion of the lower blade 42 serves as the lever 430 without a separate lever, the pin 410 as the pivot axis by pressing the inclined curve blades (53, 54) nail It is configured to cut.
- FIG. 11 is a perspective view of the blade 10 separated from the main body 120 of the nail clipper 100 shown in FIG. 7.
- 12 is a front view of the nail clipper blade 10 shown in FIG. 11, a plan view of FIG. 12 (b), a side view of FIG. 12 (c), and a bottom view of FIG. 12 (d), respectively.
- the present invention curved curve blades (53, 54), it can be confirmed that the engagement of the blade in the front view is a curved blade, it can be seen that the blade is a curved blade of the concave shape in the top view and bottom view.
- the inclined curved edges 53 and 54 of the present invention shown in FIGS. 7 to 12 are all manufactured by the same technical principle.
- the technical principle of forming and manufacturing the inclined surfaces 51.52 and the inclined curved edges 53 and 54 in the nail clipper blades 10, 20, 30, and 40 will be described in detail with reference to FIGS. 13 to 15.
- Fig. 13 shows the mutual positional relationship between the nail clipper blade and the cylindrical abrasive body 60 used for the polishing operation.
- the center of rotation of the abrasive body 60 is located on the Z axis.
- the centerline of the lower blade is located on the Y axis which meets the Z axis.
- the inclined surface 51 of the upper blades 11, 21, 31, and 41, and the inclined surface 52 of the lower blades 12, 22, 32, and 42 have an outer circumferential surface of the abrasive body 60 having a radius Rg. In contact with each other, a slope curve having a predetermined curvature Ra is formed at the boundary line.
- the upper blades 11, 21, 31, and 41 and the lower blades 12, 22, 32, and 42 are separated from each other.
- the inclined curve having the curvature Ra formed by the inclined surface 51 of the upper blades 11, 21, 31, and 41 meets the abrasive body 60 is the upper blades 11, 21, 31, 41.
- the lower inclined surface 52 is formed by making a surface with the lower blades 12, 22, 32, and 42 continuously moving downwards at a corresponding angle as follows.
- the inclination angle ⁇ 1 the same with respect to the imaginary vertical line at the tip of the upper blades 11, 21, 31, 41 and the lower blades 12, 22, 32, 42 constituting the nail clipper blade.
- Inclined surfaces 51 and 52 with ⁇ 2 are formed, respectively.
- the upper inclined surface 51 formed on the upper blades 11, 21, 31, 41 is a concave curved surface (FIG. 6 (b), FIG. 6 having a flat or constant curvature (reference numeral 70 in FIG. 15: Rb)).
- (d) is formed along the entire length of the upper inclined surface 51 of the predetermined inclination angle ⁇ 1. With respect to this inclined surface 51, the cylindrical abrasive body 60 having a radius Rg is contacted.
- an inclination curve having a predetermined curvature Ra at the boundary between the inclined surface 51 and the abrasive body 60 can be obtained.
- the upper and lower inclined surfaces are made into the inner inclined surface of the nail clipper blade, and the tip of the inclined surface 51 is polished by the cylindrical abrasive 60 having a radius Rg, the upper inclined curve having the curvature Ra is obtained.
- the blade 53 is formed on the inclined surface 51 (see FIG. 6 (b) and FIG. 6 (d)).
- the upper inclined curved blade 53 obtained from the upper blades (11, 21, 31, 41) along the angle ( ⁇ 2 ) corresponding to the inclined angle ( ⁇ 1 ) of the upper inclined surface 51, the lower inclined surface (52) make a surface with the trajectory that moves downward continuously as it is. Then, the lower slanted blades 12, 22, 32, and 42 are provided with lower slanted curved blades 54 that mesh with the upper slanted curved blades 53.
- the upper blade ( 11, 21, 31, 41 and the lower blades 12, 22, 32, 42 are simultaneously polished using the cylindrical abrasive 60 of radius Rg, the upper blade ( 11, 21, 31, and 41 are formed with concave upper inclined curved edges 53 inclined inward (see FIGS. 6 (b) and 6 (d)), that is, rearward in the longitudinal direction thereof.
- the lower blades 12, 22, 32, and 42 are also simultaneously formed with convex lower inclined curved edges 54 inclined inward (see Figs. 6 (c) and (e)), that is, rearward in the longitudinal direction thereof.
- the upper and lower inclined curved edges 53 and 54 are formed by grinding at the same time by forming a perfectly geometric unity.
- the grinding depth i.e., the tip of the upper blades 11, 21, 31, 41 and the lower blades 12, 22, 32, 42 is placed relative to the abrasive body 60, i.e., at the entry depth in the grinding process.
- the upper and lower inclined curved edges 53 and 54 of the same shape are obtained by polishing.
- FIG. 15 is a diagram for analyzing the geometry of the upper and lower blades according to the present invention.
- FIG. 15 (a) is a side view showing the tip of the blade of the nail clipper of the present invention
- FIG. 15 (b) has a curvature Rn when the upper and lower inclined curved edges 53 and 54 are seen from the front.
- 15 (c) shows a top view
- FIG. 15 (d) shows a bottom view
- FIG. 15 (e) shows the curvature Rb of the upper inclined surface 51.
- the radius Rg of the polishing body 60 used in the polishing operation becomes the curvature in the plan view of the upper curved blade 53.
- the curvature Rn of the front view in which the upper and lower inclined curved edges 53 and 54 are engaged is determined corresponding to the curvature of the cross section of the nail to be cut.
- polishing body 60, and the blade width W make the closed curved surface which consists of abcd in FIG. 15 (a). From this, as shown in FIG. 15E, the curvature Rb 70 forming the upper inclined surface 51 of the upper blade can be obtained. Accordingly, the upper inclination curve ab is made in FIG. 15 (a), and the lower inclination surface 52 is formed when the inclination curve is formed as a trajectory that is moved downward by the inclination angle ⁇ 1 and the symmetry angle ⁇ 2 of the upper inclination surface. do.
- Fig. 15 (b) the curvature Rn seen from the front of the nail clipper is first determined, and a slope curve is obtained. That is, when the inclination angle ⁇ 1 of the inclined surface of the upper blade 11 is determined in FIG. 15A, and the blade width W and the radius Rg of the polishing body 60 are determined in FIG. 15C, In FIG. 15A, the closed curved surface abcd, which is the upper inclined surface 51, and the curvature Rb of the upper inclined curved surface 70, are determined in FIG. 15E. Accordingly, the upper inclination curve ab is made in FIG.
- the oblique curve ab is made of a trajectory in which the inclination curve ab is moved downward to the inclination angle ( ⁇ 1 ) and the symmetry angle ( ⁇ 2 ) of the upper inclination surface. It is set as the inclined surface 52.
- This closed curved surface constitutes the inclined surface 52 and the curved blade 54 of the lower blade body 12.
- the curvature Rb 70 of the upper inclined surface 51 of the nail clipper may be determined first and the inclination curve may be obtained. That is, when the inclination angle ⁇ 1 of the inclined surface, the blade width W, and the radius Rg of the abrasive body are determined, the upper inclination curve ab and the curvature Rn viewed from the front are thus produced.
- a closed curved surface consisting of abef is formed as a trajectory in which the inclined curve ab is moved downward at the inclination angle ⁇ 1 and the symmetry angle ⁇ 2 of the upper inclined surface as a lower inclined surface 52.
- the inclination curve consisting of ab should not be regarded as one element and give no change such as length, height, curvature, or angle.
- the inclined curved surface of the lower blade 12 abef is formed by a trajectory in which the inclined curve of ab of the upper blade 11 is continuously moved obliquely downward at a corresponding inclination angle ⁇ 2 . It is a key technical point.
- the upper and lower inclined curved edges 53 which have the same shape and curvature, even when the upper and lower inclined surfaces 51 and 52 are slightly moved horizontally and polished with respect to the abrasive body 60 which is vertically erect and rotates. 54) can be interpreted as being made.
- FIG. 16 illustrates a difference from FIG. 15 on the assumption that the blade shown in FIG. 15 is polished by entering 0.3 mm deeper with respect to the abrasive body.
- FIG. 16 (a) is a side view showing the tip of the inner surface of the nail clipper
- Figure 16 (b) is a front view showing the inclined curved blades engaged with each other
- Figure 16 (c) is a plan view
- Figure 16 (d) shows the bottom view.
- Fig. 16 (c) when the blade is ground and polished by 0.3 mm deeper than the reference value of the polishing depth shown in Fig. 15, the image as shown in Fig. 16 (a) is removed.
- the two closed curved surfaces constituting the lower inclined surfaces 51 and 52 are separated from each other and divided into a1-b1-cd and a2-b2-ef. That is, as shown in FIG. 16 (b), the upper inclined curve edge 53 is a1-b1, and the lower inclined curve edge 54 is shown separated from each other by a2-b2.
- FIG. 16 (b) which is a front view
- the upper and lower inclined surfaces 51 and 52 of the same geometry moved 0.3 mm horizontally toward the cylindrical polishing body 60 of the same radius Rg. Accordingly, the result is that the upper and lower inclined curved edges 53 and 54 made of the same curved surface as the inclined curved surface shown by a-b in Fig. 15A are polished only slightly shifted upward. Even so, the geometries of the upper and lower inclined curved edges 53 and 54 obtained as a result of the polishing operation are meshed with each other in precise correspondence.
- This geometric analysis shows that the same conclusion can be obtained from the simulation results by 3D modeling.
- the above description means that even if there are variations in the polishing depths of the upper and lower blades with respect to the abrasive body, the upper and lower inclined curved blades can be precisely interlocked regardless of this.
- the nail clipper product having the inclined curved blade of the present invention can be commercially produced irrespective of the variation of the polishing operation according to the skill of the operator or the jig.
- the present invention can produce a nail clipper blade having a three-dimensional structure and the upper and lower inclined curved blades to match each other, and can also produce a nail clipper of the same curvature that the upper and lower sides are engaged even if there is a deviation in the polishing depth of the nail clipper blade. Let's do it. Therefore, the user can remove the conventional problem of damaging the nails by pressing the nail horizontally and then cut, and at the same time can cut the nail tip slightly rounded and smooth.
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Abstract
Description
Claims (10)
- 손톱깎이 날이 형성되는 서로 마주보는 상·하부 날체의 경사면에 3차원 경사곡선날을 형성하기 위한 손톱깎이 날체의 제조방법에 있어서,수직으로 위치한 반경 Rg을 가진 연마체의 원주면이, 수직으로부터 경사각 θ1을 가진 상부 경사면과 접촉하여 만들어지는 경계선으로 곡률 Ra인 경사 곡선을 구하는 단계와;상기 경사 곡선을 상부 경사면의 경사각 θ1과 동일한 대칭각 θ2로 하향 이동시킨 궤적으로 면을 만들어 하부 경사면의 형상을 구하는 단계; 및상기 단계들에서 얻어진 상·하부 경사면의 형상들이 각각 손톱깎이 날체의 내측 경사면이 되는 날체를 만들어, 상기 반경 Rg의 연마체를 사용하여 연마체 축과 날체를 직각으로 위치시키고, 상·하부 경사면의 선단을 동시에 연마하여 곡률 Ra인 경사 곡선을 가진 상부 경사곡선날과, 곡률 Ra인 경사 곡선을 가진 하부 경사곡선날을 형성하는 단계를 포함하는 경사곡선날형 손톱깎이 날체의 제조방법.
- 제 1항에 있어서, 곡률 Ra인 경사 곡선을 구하는 단계는, 손톱의 곡률에 대응하여 손톱깎이 정면에서 본 곡률 Rn을 먼저 정하고, 경사면의 경사각 θ1과 날 폭 W과 연마체의 반경 Rg에 관한 조건에 의하여 상부경사 곡면의 곡률 Rb을 구하여 상부경사 곡면의 형상을 만들고 이에 따라 곡률 Ra인 경사 곡선을 구하는 것을 특징으로 하는 경사곡선날형 손톱깎이 날체의 제조방법.
- 제 1항에 있어서, 곡률 Ra인 경사 곡선을 구하는 단계는, 손톱깎이의 상부 경사 곡면의 곡률 Rb을 먼저 정하여 상부경사 곡면의 형상을 만든 다음, 경사면의 경사각 θ1과 날 폭 W과 연마체의 반경 Rg에 관한 조건에 의하여 곡률 Ra인 경사 곡선을 구하는 것을 특징으로 하는 경사곡선날형 손톱깎이 날체의 제조방법.
- 제1항에 있어서, 상기 상부 날체와 하부 날체가 금속판재의 양쪽 선단에 일체로 성형되고, 이를 상·하부 경사곡선날을 서로 마주보게 굽힘 성형하는 것을 특징으로 하는 경사곡선날형 손톱깎이 날체의 제조방법.
- 제1항에 있어서, 상기 상부 날체와 하부 날체의 다른 쪽 선단들을 접합수단을 이용하여 서로 결합하고, 접합수단은, 스폿용접, 리벳접합, 클린칭 접합(clinching), 아이렛 접합, 브레이징 접합, 짜맞추기(dovetailing), 굽힘 중 어느 하나인 것을 특징으로 하는 경사곡선날형 손톱깎이 날체의 제조방법.
- 한쪽 선단에 하향의 경사면을 갖는 상부 날체와; 한쪽 선단에 상부 날체의 경사면에 대응하는 상향의 경사면을 가지면서 상부 날체와 협력하여 손톱을 절단하도록 된 하부 날체;를 포함하는 손톱깎이 날체에 있어서,상기 상·하부 날체가, 제1항 내지 제 5항 중 어느 한 항에 따른 제조방법으로 제조된 상·하부 경사곡선날을 갖춘 것을 특징으로 하는 경사곡선날형 손톱깎이 날체.
- 한쪽 선단에 하향의 경사면을 갖는 상부 날체와; 한쪽 선단에 상부 날체의 경사면에 대응하는 상향의 경사면을 가지면서 상부 날체와 협력하여 손톱을 절단하도록 된 하부 날체; 및 손톱을 절단하기 위하여 상·하부 날체에 압력을 작용하는 지렛대;를 구비하는 손톱깎이에 있어서,상기 상·하부 날체가, 제1항 내지 제 5항 중 어느 한 항에 따른 제조방법으로 제조된 상·하부 경사곡선날을 갖춘 것을 특징으로 하는 경사곡선날형 손톱깎이.
- 제7항에 있어서, 상기 상·하부 날체는 그 선단부에, 절단되어 주변으로 비산하는 손톱을 수집하는 포집부를 구비하는 것을 특징으로 하는 경사곡선날형 손톱깎이.
- 제7항에 있어서, 상기 상·하부 날체에 지지축 홀이 각각 형성되고, 상부 날체와 지렛대 사이에는, 지지축 홀에 삽입된 지지축을 매개로 몸체가 삽입결합되며, 이 몸체에는 상기 일체로 성형된 상·하부 날체가 자유로이 회전가능하게 결합된 것을 특징으로 하는 경사곡선날형 손톱깎이.
- 한쪽 선단에 하향의 경사면을 갖춘 상부 날체와, 한쪽 선단에 상부 날체의 경사면에 대응하는 상향의 경사면을 가지면서 상부 날체와 회동축을 중심으로 회동가능하게 결합된 하부 날체를 포함하고서, 상기 상부 날체의 경사면에는 평면 또는 일정한 곡률의 오목한 경사진 상부 경사곡선날이 형성되고; 상기 하부 날체의 경사면에는 상부 날체의 평면 또는 오목한 경사면에 형성된 상부 경사곡선날에 대응하는 평면 또는 경사진 볼록한 하부 경사곡선날이 형성되며; 상기 하부 날체의 말단부위가 지렛대 역할을 하면서 상·하부 경사곡선날을 가압하여 손톱을 절단하도록 구성된 경사곡선날형 손톱깎이.
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JP2012533070A JP5854356B2 (ja) | 2009-10-09 | 2010-09-27 | 傾斜曲線刃型爪切り刃体の製造方法及びこれから製造された刃体、並びにそのような刃体を有する爪切り |
US13/422,449 US8726516B2 (en) | 2009-10-09 | 2012-03-16 | Method for manufacturing inclined curve-type blade body, blade body made therefrom, and nail clipper having blade body thereof |
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US13/422,449 Continuation US8726516B2 (en) | 2009-10-09 | 2012-03-16 | Method for manufacturing inclined curve-type blade body, blade body made therefrom, and nail clipper having blade body thereof |
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WO2011043551A2 true WO2011043551A2 (ko) | 2011-04-14 |
WO2011043551A3 WO2011043551A3 (ko) | 2011-10-13 |
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PCT/KR2010/006528 WO2011043551A2 (ko) | 2009-10-09 | 2010-09-27 | 경사곡선날형 손톱깎이 날체의 제조방법과 그로부터 만들어진 날체 및 그러한 날체를 갖는 손톱깎이 |
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US (1) | US8726516B2 (ko) |
JP (1) | JP5854356B2 (ko) |
KR (1) | KR101142630B1 (ko) |
CN (1) | CN102038350B (ko) |
TW (1) | TWI498090B (ko) |
WO (1) | WO2011043551A2 (ko) |
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DE102013010786B4 (de) * | 2013-06-28 | 2020-07-02 | Zwilling J. A. Henckels Ag | Nagelknipser |
KR101637162B1 (ko) * | 2014-08-29 | 2016-07-07 | 김미리 | 비산방지 구조를 갖는 손톱깍기 |
USD783902S1 (en) * | 2016-02-22 | 2017-04-11 | Alexandre Rachid Kaidi | Dual blade nail clipper |
USD783903S1 (en) * | 2016-02-23 | 2017-04-11 | Alexandre Rachid Kaidi | Single blade nail clipper |
USD780998S1 (en) * | 2016-04-04 | 2017-03-07 | Soft Lines International, Ltd. | Nail trimmer |
JP2018102408A (ja) * | 2016-12-22 | 2018-07-05 | 株式会社貝印刃物開発センター | 爪切り |
USD996718S1 (en) * | 2020-03-03 | 2023-08-22 | Royal Metal Industrial Co., Ltd | Body for nail clipper |
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- 2010-09-27 JP JP2012533070A patent/JP5854356B2/ja active Active
- 2010-09-30 CN CN201010503900XA patent/CN102038350B/zh active Active
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US8726516B2 (en) | 2014-05-20 |
TWI498090B (zh) | 2015-09-01 |
JP5854356B2 (ja) | 2016-02-09 |
KR20110039184A (ko) | 2011-04-15 |
TW201119606A (en) | 2011-06-16 |
WO2011043551A3 (ko) | 2011-10-13 |
US20120210583A1 (en) | 2012-08-23 |
KR101142630B1 (ko) | 2012-05-03 |
CN102038350B (zh) | 2013-07-03 |
JP2013507169A (ja) | 2013-03-04 |
CN102038350A (zh) | 2011-05-04 |
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