Foot-cutting device

The toenail trimming device with a rotatable footrest and guided convex protrusions addresses the challenge of toenail cutting for individuals with mobility issues, providing a convenient and efficient solution for toenail alignment and cutting.

JP7833257B2Active Publication Date: 2026-03-19八角 綾音
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2020-10-12
Publication Date
2026-03-19

AI Technical Summary

Technical Problem

Conventional toenail cutting devices are inconvenient and difficult for individuals with mobility issues, such as the elderly or those with knee difficulties, to use effectively.

Method used

A toenail trimming device with a rotatable footrest, positioned behind the nail clipper, guided by convex protrusions, and equipped with an elastic surface and a locking mechanism, allowing for easy toenail alignment and cutting.

Benefits of technology

Enables individuals with mobility issues to cut their own toenails comfortably and efficiently by facilitating toenail alignment and reducing the difficulty associated with conventional devices.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a device for enabling a user to clip toenails of his / her own foot by him / herself without much effort.SOLUTION: A toenail clipper device includes: a foot placement base arranged to be rotatable; a nail clipper 7 arranged in front of the foot placement base; and operation means 9, 10 for operating the nail clipper. When a foot is placed on the foot placement base to clip a toenail by allowing the toenail to match with a position of the nail clipper, a rotation axial center of the foot placement base is set on a rear side opposed to a front side of the nail clipper from a position of a ball of a toe on a lower side of a foot located between a base of the toe and an arch of the foot.SELECTED DRAWING: Figure 1
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Description

Technical Field

[0001] The present invention relates to a toenail cutting device.

Background Art

[0002] Several toenail cutting devices and toenail grinding devices have been proposed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Patent Document 7

Patent Document 8

Patent Document 9

Patent Document 10

Patent Document 11

Patent Document 12

Patent Document 13

Patent Document 14

Patent Document 15

[0004] The devices proposed above were invented for cutting fingernails, toenails, or even for polishing nails. However, it was very difficult to use a fingernail cutting device to cut toenails. In investigating the cause of this, we came to the following realization: Although we refer to them collectively as "fingers," the structure (including their location) and function of fingers are completely different from the structure (including their location) and function of toes. Even those without disabilities, who have become aged and find it difficult to bend their bodies, may have no trouble cutting their fingernails with a standard, commercially available nail clipper, but will likely find it difficult to cut their toenails. In particular, those who have difficulty bending their knees will likely find it difficult to cut their toenails with conventional nail clippers.

[0005] Even using the toenail trimming device (toenail trimming device) proposed above, it was inconvenient and difficult to trim toenails. For example, using the devices described in Patent Document 1 (Japanese Patent Publication No. 2019-217121) or Patent Document 13 (U.S. Patent No. 5,775,340) was inconvenient and difficult.

[0006] Even when using the toenail clipping device in which the grinding wheel in the polishing device described above (Patent Document 2 (Japanese Patent Publication No. 2004-436) and Patent Document 16 (German Patent Invention No. 10157125) is replaced with a nail clipper, it was still difficult and inconvenient to cut the toenails.

[0007] This invention was made to solve the aforementioned problems. Specifically, it aims to provide a device that allows people with some kind of problem with a part of their body, such as the elderly, people who have difficulty bending their knees, people who have difficulty bending down, or people with foot problems, to cut their own toenails without much difficulty. [Means for solving the problem]

[0008] The inventors of this invention, A toenail trimming device comprising a rotatable footrest, a nail clipper provided on the front side of the footrest, and an operating means for operating the nail clipper, The pivot axis of the footrest is located behind the toenail clipper, opposite to the front side, when the toenail is positioned on the footrest to trim the toenail, and the foot is placed on the footrest with the toenail in the position of the nail clipper. This position is located between the base of the toes and the arch of the foot, on the underside of the foot. I propose a toenail trimming device.

[0009] The inventors propose a toenail trimming device in which, preferably, the rotation axis of the footrest is located at a position at least 7 cm behind the cutting edge position of the nail trimmer.

[0010] The inventors propose a toenail clipping device in which, preferably, the rotation axis of the footrest is located at a position at least 12 cm behind the cutting edge position of the nail clipper.

[0011] The inventors propose a toenail trimming device, preferably such that the rotation axis of the footrest is located at the arch of the foot when the toenail is positioned in the footrest to trim the toenails.

[0012] The inventor proposes a toenail trimming device, preferably comprising a protrusion provided on the footrest for guiding the toes.

[0013] The present inventor proposes the above-mentioned toenail clipper, preferably, a toenail clipper in which a total of two convex portions for guiding the toes are provided at positions corresponding to both sides of the nail clipper.

[0014] The present inventor proposes the above-mentioned toenail clipper, preferably, a toenail clipper in which the convex portion is made of a deformable material.

[0015] The present inventor proposes the above-mentioned toenail clipper, preferably, a toenail clipper in which the convex portion has a substantially dome shape.

[0016] The present inventor proposes the above-mentioned toenail clipper, preferably, a toenail clipper in which the upper surface of the footrest is made of an elastic material.

[0017] The present inventor proposes the above-mentioned toenail clipper, preferably, a toenail clipper in which the upper surface of the footrest has an area large enough to simultaneously place all five toes of the foot on the upper surface of the footrest.

[0018] The present inventor proposes the above-mentioned toenail clipper, preferably, a toenail clipper in which the upper surface of the footrest has an area large enough to place the entire lower surface of the foot on it.

[0019] The present inventor proposes the above-mentioned toenail clipper, preferably, a toenail clipper in which the upper surface of the footrest is a high inclined surface on the side of the nail clipper.

[0020] The present inventor proposes the above-mentioned toenail clipper, preferably, a toenail clipper in which when the upper surface of the footrest is made horizontal, the upper surface is rotatable within the horizontal plane, and the nail clipper is non-rotatable around the axis perpendicular to the horizontal plane.

[0021] The present inventor proposes a toenail clipping device, preferably comprising a lower blade and an upper blade, wherein there is a gap between the tip of the lower blade and the tip of the upper blade when the blades are not in operation, the clipping device is fixed in place so as not to rotate around an axis perpendicular to a horizontal plane and not to move vertically during nail clipping operation.

[0022] The inventors propose a toenail trimming device, preferably further comprising a locking mechanism for restricting the rotation of the footrest.

[0023] The present inventor proposes a toenail clipping device, preferably wherein the operating means comprises a wire and a handle, one end of the wire is connected to the handle, and the other end of the wire is connected to the nail clipper, and the force applied to the handle is configured to operate the nail clipper via the wire.

[0024] The present inventor proposes a toenail trimming device, preferably further comprising a magnifying lens and a flexible support member for supporting the magnifying lens, configured to allow the user to view the toes of a foot placed on a footrest through the magnifying lens. [Effects of the Invention]

[0025] Elderly people, those who have difficulty bending their knees or bending down, or those with foot problems can cut their own toenails without much difficulty.

[0026] In particular, the footrest is rotatable, and the pivot point of this rotatable footrest is positioned behind the convex protrusion on the underside of the foot (located between the base of the toes and the arch of the foot) when the toenails are positioned on the footrest to trim the toenails. This makes it very easy to adjust the rotation of the footrest. That is, if the pivot point is set behind the convex protrusion on the underside of the foot, force can be easily applied from the convex protrusion on the underside of the foot to the footrest, allowing the footrest to rotate smoothly. Moreover, fine adjustment of the rotation angle is easy. In contrast, if the pivot axis position is set closer to the nail clipper, in front of the convex protrusion on the underside of the foot, fine adjustment becomes difficult, and this is especially true for the elderly, making nail trimming a difficult task. [Brief explanation of the drawing]

[0027] [Figure 1] Schematic side view of the toenail trimming device of the present invention [Figure 2] Schematic plan view of the toenail trimming device of the present invention [Figure 3] Schematic side view of the foot rest of the toenail trimming device of the present invention. [Figure 4] Schematic diagram illustrating the operating mechanism of the toenail trimming device of the present invention. [Figure 5] Schematic diagram of the nail clipper in the toenail trimming device of the present invention [Figure 6] An explanatory diagram showing the toenails placed on the footrest of the toenail trimming device of the present invention, aligned with the nail trimmer. [Figure 7] An explanatory diagram showing the toenails placed on the footrest of the toenail trimming device of the present invention, aligned with the nail trimmer. [Figure 8] An explanatory diagram showing the state of trimming toenails using the toenail trimming device of the present invention. [Modes for carrying out the invention]

[0028] The present invention is a toenail trimming device. The toenail trimming device comprises a base. The toenail trimming device comprises a foot rest. The foot rest is provided on the base. The foot rest is provided on the base directly or indirectly (through something). The foot rest is provided so as to be rotatable. The reason why it is important that the foot rest is rotatable is as follows. Let's consider the case where the foot rest is fixed. When trimming toenails, the toenails are trimmed in several steps with the nail trimmer. In particular, in the case of the big toe, regardless of which action is performed first, the blade of the nail trimmer is positioned in front of the big toe and the nail is trimmed. This alone is insufficient. Next, the blade of the nail trimmer is positioned diagonally in front of the big toe to the right and the nail is trimmed. Also, the blade of the nail trimmer is positioned diagonally in front of the big toe to the left and the nail is trimmed. In this way, the toenail of the big toe is trimmed neatly for the first time. If this were a fingernail, it would be easy to move the nail clipper to match the shape of the nail. However, it can be imagined that it would be difficult to move the nail clipper when trimming a toenail. In other words, it can be understood that it is preferable for the nail clipper to be fixed (although the lower blade (fixed blade) of the nail clipper is fixed, the upper blade (movable blade) rotates toward the lower blade during the nail trimming operation). Therefore, it can be understood that it is preferable to be able to move (adjust) the direction of the toes relative to the nail clipper. This is achieved by making the footrest rotatable (or swivelable). The reason why there is such a difference between trimming fingernails and trimming toenails is that the structure of the fingers and toes are different. The length of the fingers is different, and the dexterity of the fingers is also different. For example, it is easy to spread the fingers apart, whereas it is difficult to spread the toes apart. This is likely one of the major reasons. Here, the footrest is not limited to a platform on which the feet are directly placed. For example, another plate may be placed on the rotatable platform, and the feet may be placed on the plate. In short, the footrest may be composed of one component, or of two or more components. It may be composed of a stacked type of two or more components. It may also be a parallel type rather than a stacked type.In the embodiment described later, which includes a disc 3 and a cushion 5, the disc 3 and cushion 5 can be considered as a footrest. This is because the cushion 5 also rotates in conjunction with the rotation of the disc 3. The cushion 5 alone can also be considered as a footrest. It is important to set the position of the rotation axis of the footrest. For example, if the distance between the rotation axis and the nail clipper is too close, nail clipping becomes difficult. This can be understood by referring to Figure 3. The underside (back) of the foot is not a flat surface. A vertical cross-section along the longitudinal direction of the foot (see Figure 3) shows that there are areas with no gap and areas with a gap (for example, the arch of the foot) between the upper surface of the footrest and the underside (back) of the foot placed on the footrest. In other words, the parts of the footrest that are in contact with the upper surface are the heel (the rear part of the sole of the foot) and the convex, protruding part on the underside of the foot located between the base of the toes and the arch (corresponding to the metatarsal bones). The space between the heel and the aforementioned convex, protruding part is arched and recessed, and this is called the "arch of the foot." Therefore, the parts of the foot from which force can be applied to the footrest are the heel (the rear part of the sole of the foot) and the convex, protruding part on the underside. When trying to rotate the footrest to trim toenails, applying force from the heel to rotate the footrest inevitably resulted in poor movement of the toes. It was not easy to position the toenails with the nail clippers. This was probably because the distance between the heel and the toenails was long. In contrast, when attempting to rotate the footrest by applying force from the convex protrusion on the underside of the foot (corresponding to the metatarsal bones), it was easier to align the toenails with the nail clippers compared to the previous case. This was likely because the distance between the convex protrusion on the underside of the foot (corresponding to the metatarsal bones) and the toenails was short. When the point of application of the force applied from the foot to rotate the footrest was behind the pivot point of the footrest, that is, when the pivot point was close to the nail clippers, it was difficult to rotate the footrest and align the toenails with the nail clippers. Conversely, the opposite was easy.Accordingly, in the present invention, the rotation axis position is located on the rear side (heel side) opposite to the front side of the nail clipper, when the toenail is aligned with the nail clipper and the foot is placed on the footrest to cut the toenail. This is shown in Figure 3. Considering the general length from the tip of the toes to the heel, the rotation axis of the footrest should be located at least 7 cm behind the cutting edge position of the nail clipper. Preferably, it should be at least 10 cm behind. Even more preferably, it should be at least 12 cm behind. It should be within 20 cm of the cutting edge position of the nail clipper. Even more preferably, it should be within 18 cm. Even more preferably, it should be within 17.5 cm. For example, when attempting to trim a toenail and aligning the toenail with the nail clipper, placing the foot on the footrest, the rotation axis of the footrest should be located at the arch of the foot. The shape of the footrest can be, in plan view, a square, rectangle, circle, or ellipse. Of course, it is not limited to these, but it will generally be one of the shapes described above. In this case, the rotation axis of the footrest will be located where the two diagonals intersect in the case of a square or rectangle. In the case of a circle or ellipse, it will be the so-called center position. In short, it is sufficient to consider that the rotation axis is located at the center of the footrest, and the size of the footrest should be determined so that the rotation axis satisfies the above conditions. The length of the footrest in the front-to-back direction (for example, the direction connecting the toes and heel when the foot is placed on it) is, for example, about 25 to 30 cm. The toenail trimming device is equipped with a nail clipper. The nail clipper is provided in conjunction with the footrest. The nail clipper is located on the front side of the footrest. A commercially available nail clipper can be used. The toenail clipping device is equipped with an operating mechanism. The operating mechanism operates the nail clipper.

[0029] In the present invention (toenail trimming device), preferably, the upper surface of the footrest side, which contacts the lower surface of the placed foot, is an inclined surface that is higher on the nail trimmer side. This configuration is preferred because it allows for a comfortable posture when trimming toenails. The inclination angle is, for example, about 3° to 30°. Preferably, it is 20° or less.

[0030] The present invention (toenail trimming device) preferably further comprises a protrusion provided on the footrest. The presence of the protrusion guides (restricts, for example, fixes) the position of the toes. Let's consider a scenario without the protrusion. When trying to trim fingernails, it would be easy to position the fingernails with the blades of the nail clippers. However, it is difficult to position toenails, which are far from the hands and eyes, with the blades of the nail clippers. The protrusion is a guiding means that positions the toenails in correspondence with the blades of the nail clippers. It is easy to understand that the operation and motion of trimming toenails will be greatly improved by having this. The protrusion is preferably made of a deformable material (for example, a cushioning material such as sponge). The reason for saying that it is deformable is that the size of the toes etc. differs from person to person, so it is made to accommodate many people. In short, the protrusions are preferably not made of a rigid material. This advantage will be easily understood from Figures 6 and 7. The protrusions are preferably roughly dome-shaped. Here, roughly dome-shaped means that they can be roughly hemispherical or roughly semi-ellipsoidal. In short, this is to make it easier for the toes to be smoothly guided when they are placed on the protrusion. In this sense, a pyramidal shape is also acceptable. In short, it is sufficient for the upper side of the protrusion to be small. However, if there are corners as in the pyramidal shape, the toes will feel uncomfortable when they come into contact with it. In this sense, a curved side surface is preferable. The protrusions are preferably provided in multiples. There can be two or three or more. Usually there are two. The preference for providing multiple protrusions (for example, two) will be easily understood from Figures 6 and 7. The size of the protrusions is such that the diameter of the base is about 5 to 30 mm.

[0031] Preferably, the surface of the footrest that comes into direct contact with the sole of the foot (the surface on which the foot is placed) is elastic. In this sense, the toenail clipper is equipped with an elastic material (including a cushioning material). It is acceptable for the footrest to be made of an elastic body, but constructing the footrest solely from an elastic body would limit the freedom of material selection. Therefore, it is preferable that an elastic material (including a cushioning material) is provided on top of the footrest. If the conditions "the upper surface of the footrest is made of an elastic material" and "the nail clipper is mounted in a fixed position so that it does not move vertically during nail clipping" are met, the following features are particularly advantageous. The height of the toenails differs slightly from toenail to toenail, even in the same person. The height of the big toenail is different from that of the little toenail. As mentioned above, the mounting method of the nail clipper is basically fixed. That is, the upper blade (movable blade) of the nail clipper moves during nail clipping, but the lower blade (fixed blade) of the nail clipper does not move. This is because, when trimming toenails, adjusting the height of the lower blade (fixed blade) of the nail clipper is troublesome, especially depending on which toenail is being trimmed. Even if the set height of the nail clipper is adjustable, the advantage of not having to change the height position once the set height is determined to suit the person trimming the nails is easily understood. The gap between the upper blade (movable blade) and the lower blade (fixed blade) of the nail clipper is usually slightly larger than the thickness of the nail when the upper blade (movable blade) is not in operation (before the nail-cutting operation). As mentioned above, the vertical height of the lower blade (fixed blade) of the nail clipper is at a fixed position. For this reason, if the height of the lower blade (fixed blade) (the gap between the upper blade (movable blade) and the lower blade (fixed blade)) is set to the height of the big toe's nail, the little toe's nail will fall outside the gap between the upper blade (movable blade) and the lower blade (fixed blade) of the nail clipper. If the little finger's nail is positioned lower than the lower blade (fixed blade) of the nail clipper, it becomes difficult to cut the little finger's nail smoothly. Conversely, if the height of the lower blade (fixed blade) (the gap between the upper blade (movable blade) and the lower blade (fixed blade)) is adjusted to match the height of the little finger's nail, the thumb's nail will fall outside the gap between the upper blade (movable blade) and the lower blade (fixed blade) of the nail clipper. The thumb's nail will be positioned higher than the upper blade (movable blade) of the nail clipper, making it difficult to cut the thumb's nail smoothly.However, as mentioned above, if the top surface of the footrest is made of elastic material, even if the height of the toenails of each toe is different, the degree to which the elastic material on the top surface of the footrest is indented can be adjusted depending on the force applied to the toes. In particular, it is easy to apply a large force to the big toe, so by pressing down hard, the elastic material on the top surface of the footrest can be indented significantly, making it easy to match the height of each toenail to the height of the lower blade (fixed blade) (the gap between the upper blade (movable blade) and the lower blade (fixed blade)). In other words, the toenails of each toe can be cut smoothly.

[0032] The footrest is provided to be rotatable. However, it would be inconvenient if the footrest easily rotated while someone was cutting their toenails. Therefore, it is preferable that the footrest be equipped with a locking mechanism to restrict its rotation. For example, if a recess (or protrusion) and a protrusion (or recess) are provided at desired locations on the footrest and a member (e.g., a base) facing the footrest, locking can be achieved by the engagement of the recess and protrusion. Of course, it is possible to suppress the rotation using the force of the foot.

[0033] The operating means includes, for example, a wire. For example, it includes a handle (lever). One end of the wire is connected to the handle, and the other end of the wire is connected to the nail clipper. The force applied to the handle by hand is transmitted through the wire to operate the nail clipper.

[0034] The present invention (toenail trimming device) preferably comprises a magnifying lens. It also comprises a support member. The support member supports the magnifying lens. At least a part of the support member is made of a flexible material. The reason why it is preferable to include a magnifying lens is as follows: When trimming fingernails, the distance between the hand and the eye is short. Therefore, it is not a problem even for people with poor eyesight. However, when trimming toenails, the distance between the foot and the eye is long. It is a big problem for people with poor eyesight. Therefore, having a magnifying lens is very convenient. The reason why it is preferable for at least a part of the support member to be made of a flexible material is as follows: Because the direction of the magnifying lens can be adjusted.

[0035] Specific embodiments are described below. However, the present invention is not limited to the following embodiments. Various modifications and applications are also included in the present invention, as long as the features of the present invention are not significantly impaired.

[0036] Figures 1 to 8 are explanatory diagrams of a toenail trimming device according to one embodiment of the present invention. Figure 1 is a schematic side view of the toenail trimming device of the present invention. Figure 2 is a schematic top view of the toenail trimming device of the present invention. Figure 3 is a schematic side view of the toenail trimming device of the present invention with a foot placed on the footrest. This third figure is for explaining the rotation axis position of the footrest. Figure 4 is a schematic explanatory diagram of the operating means of the toenail trimming device of the present invention. Figure 5 is a schematic explanatory diagram of the nail clipper of the toenail trimming device of the present invention. Figure 6 is an explanatory diagram of the toenails placed on the footrest of the toenail trimming device of the present invention, aligned with the nail clipper. Figure 7 is an explanatory diagram of the toenails placed on the footrest of the toenail trimming device of the present invention, aligned with the nail clipper. Figure 8 is an explanatory diagram of the toenails being trimmed with the toenail trimming device of the present invention.

[0037] In each figure, 1 is the base. 2 is the stand. 3 is a rotatable disc. 4 is the protrusion. 5 is the cushion. 6 is the nail clipper mounting piece. 7 is the nail clipper. 8 is the nail clipper operating part. 9 is the wire. 10 is the lever. 11 is the arm (e.g., a clip-type arm). 12 is the magnifying lens. A is the screw. B is the fixed base. C is the lever part. D is the component attached to the lever part C. E is the component connected to component D attached to the lever part C by a connecting component F. G is the wire fastening fitting. H is the arm that makes up the upper and lower blades. I is the screw.

[0038] The base 1 has a cross-section that is, for example, roughly L-shaped. It is composed of a horizontal plate and a vertical plate. A support part (like the teeth of a wooden clog) is provided on the lower surface of the horizontal plate.

[0039] A base 2 is provided on the upper surface of the horizontal plate of the base 1. This base 2 and the base 1 may be integrally constructed. Integral construction would be easy using resin molding technology.

[0040] A disc 3 is mounted on the base 2. The mounting method involves either a central axis located in the center of the disc 3 being inserted into a hole in the base 2, or an axis located in the base 2 being inserted into a hole (or bore) in the center of the disc 3. This allows the disc 3 to rotate. The structure for making the disc 3 rotatable is not limited to the above structure. Various methods can be considered. By providing a rotatable disc 3, it becomes easier to move (adjust) the direction of the toe fixed by the protrusion 4 from side to side. This makes it easier to fine-tune and trim not only the front part of the nail, but also the diagonal front part of the nail.

[0041] A cushion 5 is attached to the top surface of the disc 3. The cushion 5 is rectangular in shape. The length of the cushion 5 in the front-to-back direction is 25-35 cm. Therefore, the cushion 5 also rotates along with the rotation of the disc 3. The center position of the cushion 5 in the front-to-back and left-to-right directions is the axis of rotation of the cushion 5. The top surface of the cushion 5 is inclined so that the side with the nail clipper 7 (described later) is slightly higher. The reason for the inclination is to make the posture when placing the foot more comfortable. If the cushion 5 were inclined so that the side with the nail clipper 7 (described later) was slightly lower, or if it were completely horizontal, the posture when placing the foot would tend to be bent forward, making it difficult to perform nail clipping work.

[0042] 4 is a convex portion. The convex portion 4 is roughly dome-shaped. As can be seen from Figures 1, 6, and 7, the convex portion 4 protrudes from the upper surface of the cushion body 5. The convex portion 4 may be provided on the cushion body 5 or on the disc 3. In this embodiment, the convex portion 4 is provided on the cushion body 5. The size of the base of the convex portion 4 is a diameter of 5 to 30 mm. Two convex portions 4 are provided with a gap of approximately 10 to 20 mm (a dimension slightly smaller than the width of the big toe). The toes are placed between the convex portions 4 (see Figures 6 and 7). Since the gap (approximately 10 to 20 mm) is narrower than the width of the big toe, when the toes are placed between the convex portions 4, the convex portions 4, 4 are made of a material that can be deformed so that they are pushed outwards by the toes (for example, a flexible material; see Figures 6 and 7). When the finger is placed between the protrusions 4, the finger is guided (restricted) by the protrusions 4, 4. In this embodiment, a mechanism has been put in place to allow for safe trimming of toenails, and to easily trim the diagonal front (lateral) portion of the nail as well. Generally, toes do not have the same flexibility to spread apart as fingers, and when trimming nails, the toes are adjacent to each other, so there is a risk of damaging adjacent nails or the toes themselves when the nail clippers are in motion. For this reason, a mechanism has been put in place to safely trim the nails of the desired toes. The protrusions 4 are installed on the front part of the cushion body 5. There are a total of two protrusions 4, located on both sides of the nail clippers 7. The upper cross-section of the protrusion 4 is approximately semicircular, the diameter of the base of the protrusion 4 is 5 to 30 mm or less, and the height is approximately dome-shaped at 15 to 40 mm. Here, "approximately" means that it does not have to be a circle in a mathematical sense. The size and height of the protrusions 4 are such that they do not place excessive stress on the toes when the protrusions 4 spread the toes apart, and do not get in the way when trimming the toenails. To avoid strong irritation between the toes, the material used is one in which the outer layer is covered with fibers and the inside is filled with an elastic material such as cotton. If the goal is to avoid irritation between the toes, it is also possible to use a polymer made of polyvinyl alcohol (slime) or foamed urethane resin as the material for the inside. A material that returns to its original shape after use is preferable. The number of protrusions 4 that spread the toes apart is 1 to 4. If there is only one, it is more effective when trimming only the big toe and little toe.However, when trimming the nails of the second, third, and fourth toes, the toes may be adjacent to each other. If 3 to 4 protrusions are installed, all the toes will be spread out, which may put strain on the toes. From this perspective, two protrusions 4 are preferable.

[0043] The nail clipper mounting piece 6 is attached to the vertical plate of the base 1. The nail clipper 7 is attached to the nail clipper mounting piece 6. The blade portion of the nail clipper 7 is mounted so that it corresponds to the space between the two protrusions 4 (see Figures 1, 2, 6, and 7). Any commercially available nail clipper is sufficient for the nail clipper 7. If a nail clipper with holes at the end of the arm portion H of the upper blade (movable blade) and lower blade (fixed blade) is used, it can be easily fixed to the fixing base B described later with screws A. The nail clipper 7 can be a general nail clipper (with a concave front) or a nail clipper with a convex front for bunions. It is also possible to make the upper blade a fixed blade and the lower blade a movable blade. However, this method becomes complicated.

[0044] A nail clipping operation unit 8 is attached to the lever part C of the nail clipper 7. The operating principle and detailed structure of the nail clipping operation unit 8 are shown in Figures 4 and 5. The nail clipping operation unit 8 comprises a fixing base B that secures the nail clipper 7 with a screw A, and a member D attached to the lever part C. Member D and member E are connected by a connecting member F. One end of a wire 9 is connected to member E. It is secured with a wire fastener G. The other end of the wire 9 is connected to a lever 10. When the lever 10 is squeezed, the wire 9 moves member E downward, and in conjunction with this, member D attached to the lever part C moves downward, allowing the nails to be cut. When the lever 10 is released, the restoring force of the lever part C returns the lever 10 to its original position. The height of the nail clipper 7 is adjusted by adjusting the height of the fixing base B with a screw I. The base B is preferably made of metal from a strength standpoint, but other materials can be used as long as they are strong and non-flexible when operating the nail clippers. The size of the base B should be equal to or greater than the width of the nail clippers 7 used to ensure stable nail clipping. Specifically, the width should be about 10 to 30 mm. Component D is directly attached to the lever C. The method of attachment is not limited as long as component D attached to the lever C is securely fixed. A preferred method is to insert and fix component D into the lever C. A more preferred method is to fix it with resin or the like that covers the lever C itself. The material of component D attached to the lever C is not particularly limited, but wood, resin, metal, elastic material, etc., can be used. From the standpoint of workability and ease of force transmission during operation, it is preferable that the material does not distort or deform, so wood, resin, etc., are preferred. The size and shape are not limited as long as the force from the lever 10 is transmitted to the lever C without deficiency. However, heavy objects that would reduce the restoring force of the lever C are unsuitable. Member E, which is connected to member D by a connecting member, has a through hole through which the wire 9 passes. A fitting G for fixing the wire 9 is provided above the through hole. The fitting G is cylindrical with a hole in the center of its cross-section from the bottom to the top. There is no limit to the diameter of the hole as long as the wire 9 can pass through, but if the diameter is too large, it will be difficult to fix the wire 9, so it is preferable that the diameter is about 5-10% larger than the diameter of the wire 9. Member E, which is connected to member D, which is attached to the lever C by a connecting member, has a connecting member F attached to it in order to move in conjunction with member D.The material of connecting member F is not limited, but wood, resin, metal, elastic material, etc., can be used. However, from the viewpoint of workability, ease of force coordination during operation, resistance to distortion and deformation of the material, and being lightweight and not bulky, metal, such as rigid wire, is preferred. The material of member E is not limited, similar to member D, but wood, resin, metal, elastic material, etc., can be used. However, from the viewpoint of workability and ease of force coordination during operation, it is preferable that the material does not easily distort or deform, so the use of wood or resin is preferred.

[0045] The lever 10 connected to component E by wire 9 can be a bicycle brake lever, motorcycle brake lever, etc. As long as wire 9 is activated when lever 10 is squeezed, the lever portion of a grabber tool can also be used. In this example, a bicycle brake lever was used. The length of wire 9 is not limited, but considering that the user will be using the device while seated, it should be between 50cm and 2m. The material should be strong and flexible, such as a metal wire.

[0046] The magnifying lens 12 is supported by the arm 11. The magnifying lens 12 is for making the tips of the toenails easier to see. The magnifying lens 12 can be used regardless of size or material, as long as it can make the tips of the toenails easier to see, which is its primary purpose. The arm 11 is, for example, a clip-type arm. At least a part of the arm 11 is made of a flexible, deformable material. This is so that the position and orientation of the magnifying lens 12 supported by the arm 11 can be adjusted. The magnifying lens 12 can move forward, backward, left, and right. When viewed through the magnifying lens 12, the magnified image of the toenail can be focused. As a result, the user can sit in a chair, spread the toes apart by placing the toe-spreading protrusions 4 between their toes, then, if necessary, use the magnifying glass to magnify the toenails and set them on the nail clipper 7, and then cut their toenails by squeezing the lever 10 connected by the wire 9 to displace the nail clipper operation part 8. [Explanation of Symbols]

[0047] 1 base 2 units 3. Rotatable disk 4. Convex part 5 Cushion body 7 Nail clipper 9. Wire (actuator) 10 Lever (handle: actuation means) 11 Arms 12 Magnifying lenses

Claims

[Claim 1] A toenail trimming device comprising: a footrest rotatably mounted around an axis in a direction substantially perpendicular to the footrest surface of the footrest; a nail clipper mounted on one end of the footrest so as to be able to trim the toenails of the toes placed on the footrest surface of the footrest; and an operating means for operating the nail clipper to trim the toenails of the toes placed on the footrest surface of the footrest, The footrest is configured such that when a foot is placed on the footrest surface, a convex protrusion on the underside of the foot, located between the base of the toes and the arch of the foot, can come into contact with the footrest surface, and a force can be applied to the footrest from the convex protrusion on the underside of the foot that is in contact with the surface, thereby allowing the footrest to rotate around its axis. The aforementioned axis is located on the opposite side of the position of the nail clipper from the position of the nail clipper when the toenail is positioned and the foot is placed on the footrest to trim the toenail. This position is relative to the position of the convex protrusion on the underside of the foot, which is located between the base of the toes and the arch of the foot. Toenail clipping device.

Citation Information

Patent Citations

  • Nail manicure device with electrically-driven filing wheel has curved guide attached to finger support for defining shape of filed finger-nail

    DE10157125C1

  • Single hand nail cutter for the disabled

    JP1999155628A

  • Nail cutting device for the disabled

    JP2001299436A

  • Nail clipper

    JP2002345547A

  • Nail clipper device

    JP2003070529A