Nail clippers

Abstract

To provide a nail clipper configured to cut fingernails or toenails using the engagement of upper and lower blades.SOLUTION: A nail clipper is provided, having a configuration in which the shape of an upper elastic plate 50A constituting a body or the angles of cutting blades 51a, 51b are improved and the cutting blades have a minute distance therebetween, such that cutting performance and durability may be improved. On the tip side of the portion where the upper elastic plate and a lower plate 50B are overlapped and bound together, a portion is formed where the upper elastic plate and the lower plate are not bound to each other but are separated in a top-bottom direction. A concave portion 53 is formed in a bottom surface of the upper elastic plate on the tip side of the separated portion, and the concave portion is configured to form a thickness-reduced portion 54.SELECTED DRAWING: Figure 7a

Description

[Technical field]

[0001] The present invention relates to a nail clipper for cutting fingernails and toenails by using upper and lower blades that mesh together, and more particularly to a nail clipper that has an improved shape of the upper elastic plate that constitutes the main body and an angle of the cutting blades, and that has fine gaps between the cutting blades to improve sharpness and durability. [Background technology]

[0002] Conventional nail clippers are one of the essential hygiene items for modern people, and are used to cut continually growing fingernails and toenails to an appropriate length.

[0003] Most nail clippers are designed so that the nail is cut by the pressure of the upper and lower plates when the nail is packed between the cutting blades and the pressure plate is pressed down, so they are made by processing an elastic metal plate using various methods such as press processing, and then attaching a pressure plate that applies the lever principle.

[0004] When cutting nails, if too much pressure is applied, the upper blade hits the lower blade hard, damaging the sharp blade and causing the sharpness to drop rapidly. To prevent this, the angle of the cutting blade is made small, allowing easy cutting with less pressure.

[0005] Conventional nail clippers have a cutting blade angle of about 45 degrees, so even if the blade is sharpened, the cutting power is low. However, the current structure of nail clippers makes it difficult to cut the blade at an angle of less than 45 degrees.

[0006] In relation to such nail clippers, the technology disclosed in Korean Patent Registration No. 10-0479827 is configured such that by pressing down a push plate and operating the upper and lower body parts, the cut pieces of fingernails and toenails that are cut during the operation of the upper and lower blades around the hinge pin are collected in a dust box through an entrance space of the nail clippers.

[0007] However, as the hinge pin fixed to the push plate presses down the upper body, the upper end of the upper body becomes flat, so there is a small gap between the upper and lower blades, which can be inconvenient to use if the user has thick fingernails or toenails.

[0008] In the case of the nail clipper disclosed in Korean Patent No. 10-0866365, a support ridge is attached to the upper and lower elastic plates on which the cutting blade is formed, and the tip of the pressure plate is joined. The thickness of the upper and lower elastic plates and the pressure plate are made relatively thin, and then the cross sections of these are configured to be arc-shaped. However, since the cross sections of the upper and lower elastic plates must be formed into an arc shape, the processing cost increases.

[0009] The technology behind the present invention is disclosed in Korean Patent No. 0497063 (registered on June 15, 2005) - Nail clipper and nail clipper blade, lever, and support shaft, Korean Patent No. 0866365 (registered on October 27, 2008) - Nail clipper, Korean Patent No. 1143904 (registered on May 1, 2012) - Nail clipper with detachable blade, Korean Patent No. 1350392 (registered on January 6, 2014) - Nail clipper, and Korean Patent No. 2020882 (registered on September 5, 2019) - Nail clipper. Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention has been made to solve the above-mentioned problems in the conventional nail clippers, and the object of the present invention is to provide a nail clipper that can be used easily with very little force by improving the recess formed in the upper elastic plate of the body and the angle of the blade.

[0011] In addition, the present invention provides a nail clipper that can cut nails neatly by forming a step on the inside of the tip of the blade and reducing the blade angle to about 30 degrees to prevent the blade from being damaged when using a general nail clipper, thereby further improving sharpness and durability. [Means for solving the problem]

[0012] In order to achieve the above object, the present invention provides a nail clipper in which a main body is formed of an upper elastic plate and a lower plate, each having a cutting blade formed at one end, the upper elastic plate and the lower plate are arranged vertically so as to face each other with the cutting blades open, holes are formed in the upper elastic plate and the lower plate close to the cutting blades so that a support pin is fitted into a locking protrusion of the support pin and an engagement groove formed in a receiving part of a lever is fitted into the locking protrusion of the support pin to lock the nail clipper, the upper elastic plate and the lower plate have overlapping sections on the opposite sides of the cutting blades formed on the upper elastic plate and a recess is formed in the bottom surface of the upper elastic plate at a part where the upper elastic plate and the lower plate are not overlapped and bound but are separated in the vertical direction further towards the tip side than this section to form a reduced thickness part, and when the cutting blade of the upper elastic plate and the cutting blade of the lower plate engage with each other, the cutting blade of the upper elastic plate is located inside the cutting blade of the lower plate with a gap therebetween, and a step jaw is formed inside the inclined surfaces formed at the tips of the upper elastic plate and the lower plate, respectively.

[0013] In addition, the overlapping section of the upper elastic plate and the lower plate is bonded by spot welding or bending, and fine grooves are formed on both sides of the surface of the upper elastic plate. The angle of the cutting blades of the inclined surfaces formed at the tips of the upper elastic plate and the lower plate is formed at 28° to 32°, and it is preferable that the gap when these cutting blades mesh is set in the range of 0.03 to 0.07 mm.

[0014] In addition, the lever has a stepped portion and a bent portion formed continuously, fine grooves are machined on the surface, a receiving jaw is formed at the rear end of the receiving portion which is attached to the upper elastic plate, and an abrasive is filled into the rear surface of the stepped portion formed on the lever. Effect of the Invention

[0015] In the present invention, the recess formed on the bottom surface of the upper elastic plate of the main body is positioned in a portion where the upper elastic plate and the lower plate are not overlapped and bound, and are spaced apart in the vertical direction, further towards the tip side than the section where the upper elastic plate and the lower plate overlap and are bound together. This means that when the lever is pressed down to operate, it is possible to exert the nail clipper's function without applying as much force as before.

[0016] In addition, the angle of the cutting blades formed on the upper elastic plate and the lower plate has been improved, and when the cutting blades engage, the cutting blade of the upper elastic plate is positioned inside the cutting blade of the lower plate, which not only prevents the sharp blades from colliding strongly with each other as in the past, but also improves the cutting power to cut nails neatly and sharpen them even more. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is an overall perspective view of a nail clipper disclosed in Korean Patent No. 1845380. [Diagram 2] FIG. 2 is a side configuration diagram of FIG. [Diagram 3] FIG. 3 is a side configuration diagram showing a state in which the lever is pressed down. [Figure 4] FIG. 4 is a cross-sectional view of the lower plate taken along line AA in FIG. [Diagram 5] FIG. 5 is an overall perspective view of the nail clipper according to the present invention. [Figure 6] FIG. 6 is a perspective view showing each component separated. [Figure 7a] FIG. 7a is a side view showing the lever in operation. [Figure 7b] FIG. 7b is a side view showing the lever in operation. [Figure 7c] FIG. 7c is a side view showing the lever in operation. [Figure 8] FIG. 8 is an enlarged view of the cutting blade portion. [Figure 9] FIG. 9 is an enlarged view of the cutting blade portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the specific structures and functions of these are merely examples of configurations, and are not limited to the embodiments described in this specification.

[0019] First, as a preferred example to which the present invention is applied, the technology disclosed in the previously registered Patent No. 1845380 proposed by the applicant and recognized for its technical capabilities will be described in detail. After the problems associated with this technology are derived, the configuration and effects of the present invention will be described below.

[0020] Referring to Figures 1 to 3, the main body (1) is composed of an upper elastic plate (10) on which a cutting blade (11) is formed and a lower plate (20) on which a cutting blade (21) is formed, and the upper elastic plate (10) and the lower plate (20) are arranged one above the other so that the cutting blade (11) of the upper elastic plate (10) and the cutting blade (21) of the lower plate (20) face each other in an open state.

[0021] In addition, holes (12, 22) are formed in the upper elastic plate (10) and the lower plate (20), respectively, so as to be adjacent to the cutting blades (11, 21). A support pin (30) is fitted into the hole (22) in the lower plate (20) and the hole (12) in the upper elastic plate (10). The head portion (31) of this support pin (30) is engaged with the periphery of the hole (22) in the lower plate (20). The engagement portion (42) formed on the receiving portion (41) of the lever (40) is engaged with the engagement protrusion (32) of the support pin (30) so that the receiving portion (41) of the lever (40) is in close contact with the upper elastic plate (10).

[0022] Here, when the cutting blade (11) of the upper elastic plate (10) and the cutting blade (21) of the lower plate (20) are compressed by the lever (40), the upper elastic plate (10) and the lower plate (20) have a thickness (t1) that does not deflect, and a recess (13) is formed in the upper elastic plate (10) so that the elastic force of the upper elastic plate (10) is reduced, and a thickness-reduced portion (14) is formed in the upper elastic plate (10) by the recess (13).

[0023] The upper elastic plate (10) is made of steel or stainless steel and generally has a thickness (t1) of about 2.0 mm to 3.5 mm.

[0024] The recess (13) is formed on the lower surface of the upper elastic plate (10) facing the lower plate (20), and starts from the point (P1) where the overlapping section (S1) where the upper elastic plate (10) and the lower plate (20) overlap ends, and its width (S2) is determined by the thickness (t1) of the upper elastic plate (10) and the minimum thickness (t2) of the thickness reduction portion (14).

[0025] The lower plate (20) has a groove (23) formed around the periphery of the hole (22) in which the head portion (31) of the support pin (30) is received.

[0026] Referring to Figures 1 and 4, the lower plate (20) has a long groove (24) formed on one side, into which an abrasive member (26) for smoothing the cut surface of fingernails and toenails is inserted and fixed with double-sided tape (25).

[0027] In the nail clippers constructed as described above, when the cutting blade (11) of the upper elastic plate (10) and the cutting blade (21) of the lower plate (20) are in an open state as shown in FIG. 2, when the user presses down the lever (40) as shown in FIG. 3, the open cutting blade (11) of the upper elastic plate (10) and the cutting blade (21) of the lower plate (20) are narrowed by the lever (40).

[0028] At this time, since the upper elastic plate (10) and the lower plate (20) have a sufficient thickness (t1) not to bend, it is possible to prevent the upper elastic plate (10) from bending and causing the cutting blade (11) to protrude forward beyond the cutting blade (21) of the lower plate (20), thereby preventing the nail tip from being cut roughly.

[0029] In addition, a recess (13) is formed in the upper elastic plate (10), and a thickness-reduced portion (14) is formed in the upper elastic plate (10) by the recess (13), thereby reducing the elastic force of the upper elastic plate (10) and allowing the user to press down the lever (40) and cut nails without applying too much force.

[0030] In addition, the head portion (31) of the support pin (40) does not protrude from the lower surface of the lower plate (20), resulting in a clean appearance. The upper elastic plate (10) and the lower plate (20) that constitute the main body (1) are integrally formed, and the lower plate (20) is folded relative to the upper elastic plate (10) on the opposite side of the cutting blades (11, 21) to form an overlapping section (S1) where the upper elastic plate (10) and the lower plate (20) overlap.

[0031] However, in the previously registered patent held by the applicant, the recess formed in the upper elastic plate is formed starting from the end of the overlapping section, so that the upper elastic plate is forced to perform a long arc motion due to the lever, and the upper blade tends to be pushed out of the lower blade.

[0032] In addition, when force is applied to the lever to operate the device, the cutting blades formed on the upper elastic plate and the lower plate come into contact with each other and are damaged, resulting in a fatal weakness in durability. Also, the upper cutting blade is pushed outward from the lower cutting blade, resulting in a defect in which the nails cannot be cut cleanly.

[0033] In consideration of the problems presented in the prior patent, the applicant has attempted to provide a nail clipper that is convenient for consumers to use by optimally designing the structure of the lever including the upper elastic plate for constructing the nail clipper and the arrangement of the cutting blade, which will be described in detail with reference to Figs. 5 to 9.

[0034] As shown in Figures 5 and 6, the nail clipper of the present invention includes a body consisting of an upper elastic plate (50A) and a lower plate (50B), and is attached to a support pin (60) and includes a lever (70) for pressing down the upper elastic plate (50A) to cut nails.

[0035] The upper elastic plate (50A) and the lower plate (50B) are arranged one above the other, and the cutting blades (51a, 51b) formed at the tip of one side face each other in an open state. Holes (52a, 52b) are formed in the upper elastic plate (50A) and the lower plate (50B) located close to the cutting blades (51a, 51b), respectively.

[0036] The support pin (60) is fitted into the hole (52b) of the lower plate (50B) and engaged with the hole (52a) of the upper elastic plate (50A), and with the receiving portion (71a) and receiving jaw (71b) formed on the lever (70) in close contact with the upper elastic plate (50A), the engagement groove (72) formed in the receiving portion (71a) is engaged with the engaging protrusion (61) of the support pin (60).

[0037] As shown in Figures 7a to 7c, when the cutting blades (51a, 51b) of the upper elastic plate (50A) and the lower plate (50B) are compressed by the lever (70), the upper elastic plate (50A) and the lower plate (50B) have a thickness (t3) that does not bend, and a recess (53) is formed so that the elastic force of the upper elastic plate (50A) is reduced, and this recess (53) forms a thickness-reduced portion (54) in the upper elastic plate (50A).

[0038] The recess (53) is formed on the lower surface of the upper elastic plate (50A) facing the lower plate (50B). In this case, the recess (53) is formed at a slanted portion at a predetermined distance forward from the section (S3) where the upper elastic plate (50A) and the lower plate (50B) overlap, and has a width (S4) and thickness (t4) within a range that is not affected by the supporting force of the upper elastic plate (50A).

[0039] Therefore, when the lever (70) is pressed down, the recess (53) formed in the upper elastic plate (50A) generates an elastic force acting forward, so that the nail clipper can function with only a minimal force. In addition, the recess (53) is moved to the blade portion, which not only prevents the upper blade from being pushed forward with a small arcuate motion, but also enables the use of thin materials.

[0040] The section (S3) where the upper elastic plate (50A) and the lower plate (50B) overlap is joined by spot welding, and fine grooves (55a, 55b) are formed on both sides of the surface of the upper elastic plate (50A) to receive the head portion (62) of the support pin (60) through the hole (52b) of the lower plate (50B).

[0041] At this time, the hole (52b) of the lower plate (50B) is formed with a flange (56a) and a groove (56b) so that the head portion (62) of the support pin (60) does not protrude, thereby eliminating inconvenience during use and improving the appearance.

[0042] 8 and 9, when the cutting blade 51a of the upper elastic plate 50A and the cutting blade 51b of the lower plate 50B engage with each other, the cutting blade 51a of the upper elastic plate 50A is positioned inside with a gap x between them. This not only prevents the sharp blades from colliding with each other and causing damage, but also allows the nails to be cut cleanly and improves the sharpness of the blade.

[0043] That is, step jaws (58a, 58b) are formed on the inner side of the inclined surfaces (57a, 57b) formed on the tips of the upper elastic plate (50A) and the lower plate (50B), respectively, and it is preferable that the angle (a) of the inclined surface (57a) formed on the upper elastic plate (50A) is 43° to 47°, the angle (b) of the cutting blade formed on this inclined surface (57a) is 28° to 32°, and correspondingly, the angle (c) of the cutting blade formed on the inclined surface (57b) of the lower plate (50B) is also set in the range of 28° to 32°.

[0044] If the cutting edges (51a, 51b) are not cut within this range, the process of forming the cutting edges (51a, 51b) on the upper elastic plate (50A) and the lower plate (50B) becomes more difficult, and problems occur in that the cutting edge becomes dull or excessive force must be applied when the lever (70) is pressed down.

[0045] The gap (x) between the cutting blade (51a) of the upper elastic plate (50A) and the cutting blade (51b) of the lower plate (50B) is preferably as small as about 0.03 to 0.07 mm. If it is larger than this range, the nail may feel bent when cutting or the sharpness may be somewhat reduced. Also, if the angle of the cutting blade is large, the cutting force increases and the upper blade may push out the lower blade. If it is small, the sharpness and cutting feeling are good, but the upper blade pushes and rubs the lower blade, damaging the sharp blade, and the durability drops sharply.

[0046] The lever (70) has a stepped portion (73a) and a bent portion (73b) continuously formed thereon, and fine grooves (74) are machined on the surface thereof, thereby making it convenient to use. A receiving jaw (71b) is formed at the rear end of the receiving portion (71a) which is attached to the upper elastic plate (50A), thereby increasing the pressing force.

[0047] In addition, abrasive material 75 is embedded in the rear surface of the step portion 73a formed on the lever 70, making it easy to finish cutting fingernails or toenails. Although not shown, the above-mentioned can also be applied to the case where the overlapping section S3 of the upper elastic plate 50A and the lower plate 50B are integrally manufactured.

[0048] With this configuration, as shown in Figures 7a to 7c, when the cutting blades (51a, 51b) of the upper elastic plate (50A) and the lower plate (50B) are open, the user can press down the lever (70) to cut not only fingernails but also toenails to an appropriate length.

[0049] At this time, since the recess (53) formed in the inclined portion of the upper elastic plate (50A) constitutes a thickness-reduced portion (54), the lever (70) can be pressed down with little force to cut the nail, and the cutting blade (51a) of the upper elastic plate (50A) and the cutting blade (51b) of the lower plate (50B) are narrowed by this lever (70), and the cutting blade (51a) of the upper elastic plate (50A) is maintained in a state where it is closely inserted inside the cutting blade (51b) of the lower plate (50B) due to the gap (x) between the cutting blades (51a, 51b) on both sides.

[0050] Therefore, by reliably preventing the cutting blade (51a) of the upper elastic plate (50A) from protruding further forward than the cutting blade (51b) of the lower plate (50B), it is possible to prevent the toe of the fingernail from being cut roughly.

[0051] In this manner, by arranging the recess (53) formed in the upper elastic plate (50A) at the inclined front portion in the section (S3) where the lower plate (50B) overlaps, when the lever (70) is pressed down, only a minimal force is required to perform the nail clipping function.

[0052] That is, in order to obtain good cutting performance with a small force from the lever (70), the thickness of the upper elastic plate (50A) and the lower plate (50B) must be made thick so as not to bend, and the angle of the cutting blade must be made as small as possible. However, the thicker the plates are, the more force is required to be applied to the lever (70).

[0053] In consideration of this, a recess (53) is formed in the inclined portion at a predetermined distance forward from the section (S3) where the upper elastic plate (50A) and the lower plate (50B) overlap, thereby enabling the lever (70) to operate more smoothly.

[0054] In addition, the cutting blade (51a) of the upper elastic plate (50A) is positioned inside and engages with the cutting blade (51b) of the lower plate (50B), which not only prevents the sharp blades from clashing with each other and causing damage as in the past, but also allows nails to be cut neatly, further improving the sharpness.

[0055] In addition, the head portion (62) of the support pin (60) is recessed into the lower surface of the lower plate (50B), giving it a neat appearance, and the lower plate (50B) is attached to the upper elastic plate (50A) by spot welding on the opposite side of the cutting blades (51a, 51b), which has the advantage of making the manufacturing process easy.

[0056] The technical object of the present invention is achieved by the technical configuration as described above, and has been described with reference to limited embodiments and drawings. However, the present invention is not limited thereto, and various modifications and variations can be made by those skilled in the art to which the present invention pertains within the technical spirit of the present invention and the scope of the claims set forth below. [Explanation of symbols]

[0057] 50A: Upper elastic plate 50B: Lower board 51a, 51b: Cutting blade 52a, 52b: Hole 53: Recess 54: Thinning area 55a, 55b: fine grooves 56a: Groove 57a, 57b: Inclined surface 58a, 58b: Step jaw 60: Support pin 61:Latching protrusion 62: Head section 70: Lever 71a: Receiving part 71b: Receiving jaw 72: Engagement groove 73a: Step 73b: Bent part 74: Micro groove 75: Abrasive material

Claims

1. A nail clipper comprising an upper elastic plate (50A) and a lower plate (50B) each having a cutting blade (51a, 51b) formed at the tip thereof, the upper elastic plate and the lower plate being arranged vertically so as to face each other with the cutting blades open, holes (52a, 52b) formed in the upper elastic plate and the lower plate close to the cutting blades, a support pin (60) being fitted into the holes, and an engagement groove (72) formed in the receiving portion (71a) of a lever (70) being fitted into and engaged with the engagement protrusion (61) of the support pin (60), The upper elastic plate (50A) and the lower plate (50B) have a mutually overlapping section (S3) at the rear end side opposite to the cutting blades (51a, 51b), and at the tip side of the overlapping section (S3) where the upper elastic plate (50A) and the lower plate (50B) are overlapped and bound, a portion where the upper elastic plate (50A) and the lower plate (50B) are not bound to each other and are separated in the vertical direction is formed, and a recess ( a recess (53) is formed in the upper elastic plate (50A) and a thickness-reduced portion (54) is formed in the recess (53); when the cutting blade (51a) of the upper elastic plate (50A) and the cutting blade (51b) of the lower plate (50B) engage with each other, the cutting blade of the upper elastic plate is positioned inside the cutting blade of the lower plate with a gap (x) therebetween; and step jaws (58a, 58b) are formed on the inside of inclined surfaces (57a, 57b) formed at the tips of the upper elastic plate (50A) and the lower plate (50B), respectively.

2. 2. The nail clipper according to claim 1, wherein the upper elastic plate (50A) and the lower plate (50B) are joined together in a section (S3) where they overlap by spot welding or bending, and fine grooves (55a, 55b) are formed on both sides of the surface of the upper elastic plate.

3. The nail clipper according to claim 1 or 2, characterized in that the angle of the cutting blades of the inclined surfaces (57a, 57b) formed at the tips of the upper elastic plate (50A) and the lower plate (50B) is set to 28° to 32°, and the gap (x) when these cutting blades mesh is set to a range of 0.03 to 0.07 mm.

4. 2. The nail clipper according to claim 1, wherein the lever (70) has a stepped portion (73a) and a bent portion (73b) formed continuously, fine grooves (74) machined on the surface, and a receiving jaw (71b) is formed at the rear end of a receiving portion (71a) that is attached to the upper elastic plate (50A).

5. 5. The nail clipper according to claim 4, wherein an abrasive material (75) is embedded in the rear surface of the step (73a) formed on the lever (70).

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