TWM587934U - Electric fingernail grinder - Google Patents

Abstract

An object of the present invention is to provide an improvement of an electric nail polisher. The novel solution is an electric nail polisher, which includes a grinding part, and the grinding part includes a glass file.

Description

Electric nail grinder

The novel creation relates to an electric nail grinder, and in particular to an electric nail grinder using a glass file.

An electric nail polisher is used as a prop for simply grinding the nails of the left and right hands in a short time regardless of the dominant hand. Nowadays, it is common to have a portable electric nail grinder. The portable electric nail polisher basically includes a power switch, a battery, a motor, a motion conversion mechanism, and a grinding unit. During use, the grinding unit vibrates or rotates at high speed in conjunction with the driving of the motor. The user causes the vibrating or rotating abrasive portion to contact the nail surface to polish the nail surface.

So far, attempts have been made to improve electric nail polishers from various viewpoints, such as pursuing the shape of the grinding section (Patent Document 1), preventing noise (Patent Document 2), making a box that can replace the grinding section (Patent Document 3), and adding Debris removal mechanisms (Patent Document 4, Patent Document 5) and other electric nail polishers in pursuit of more convenience.

However, these improvements focus on improving the operability of the electric nail polisher and reducing the labor after grinding the nails. However, the improvement of the material quality of the grinding part which is directly related to the quality of the nails has been neglected. In fact, the abrasive part of the electric nail polisher is easily worn and deformed due to high-speed movement, so there is a problem in the durability of the abrasive part in any of the foregoing prior arts.
(Previous technical literature)
(Patent Literature)

Patent Literature 1: Japanese Patent Laid-Open No. 11-235227 Patent Literature 2: Japanese Patent Laid-Open No. 2000-175733 Patent Literature 3: Utility Model Registration No. 3177512 Patent Literature 4: Japanese Patent Laid-Open No. 11-235228 Patent Document 5: Japanese Patent Laid-Open No. 2001-120343

(New type of problem to be solved)
Therefore, the new creator returns to the origin of the electric nail polisher, and seeks an electric nail polisher having a grinding part that has less wear and deformation even if it is used for a long period of time, and can achieve high user satisfaction with nail grinding.
(Technical means to solve problems)

Thus, the new creator has completed a new type of electric nail polisher composed of a glass file with a grinding section. That is, the new model is as follows.
(Scheme 1) An electric nail grinder including a grinding section including a glass file.
(Scheme 2) The electric nail polisher according to Scheme 1, wherein the glass file is formed by grinding surfaces on at least a portion of the glass.
(Scheme 3) The electric nail polisher according to scheme 1 or 2, wherein the glass file is formed on at least a part of glass selected from the group consisting of flat glass, compressed glass, and hardened glass with a polished surface having a surface roughness of 10 μm or more and 100 μm or less.
(Embodiment 4) The electric nail polisher according to any one of aspects 1 to 3, wherein a metal layer is formed on a surface of the glass file.
(Embodiment 5) The electric nail polisher according to any one of aspects 1 to 4, wherein the grinding portion has a sharp tip shape.
(Compared to the efficacy of the prior art)

The abrasive part of the novel electric nail polisher has less abrasion and deformation. Therefore, the performance of the novel electric nail polisher is stable for a long time, and the amount of waste can be suppressed to the minimum.

Refer to the drawings to explain the new model. FIG. 1 schematically illustrates an example of the new-type electric nail polisher and its use condition. The electric nail polisher 1 shown in FIGS. 1 and 2 includes a main body 2 and a head 3, and a grinding portion 4 is attached to the head 3. A motion conversion mechanism 7 including a battery 5, a motor 6, shafts 71 and 72, and gears 73 and 74 is built in the main body 2 and sealed by removable covers 8 and 9.

As shown in Figs. 1 and 2, when the power switch 10 of the main body is operated to drive the motor 6, the head 3 and the grinding part 4 adhered to the head 3 face upwards (connected by the arrow in Fig. 1) (Indicated) began high-speed reciprocating motion. The user can polish the surface of the nail by bringing the surface of the abrasive portion 4 that reciprocates at high speed into contact with the surface 12 of the nail. Alternatively, the user can arrange the shape and length of the nail by contacting the surface of the abrasive portion 4 reciprocating at high speed with the edge 15 of the nail. Note that subtle parts such as wiring are omitted in FIG. 2.

1 and 2 are examples of the main body 2 having a cylindrical or rod shape. However, in the present invention, the size and shape of the main body 2 can be freely changed within a range where the operability is not impaired. The material of the body is not limited as long as the operability of the body is not impaired. Generally, a general plastic with a small specific gravity and excellent formability is used as a main material. It is also possible to decorate the body portion by printing and evaporation. In the present invention, in order to improve the user's feeling of use, a neck portion or a non-slip portion that is easy to grasp can be provided on the body.

A cover, a charger, a frame, and the like for protecting the head can also be added to the new electric nail polisher. The necessary structure in the new model is a grinding part including a glass file, and other structures can be various and unlimited.

The electric nail polisher of the present invention is characterized in that the grinding part 4 includes a glass file. The glass file is one in which a polished surface is formed on at least a part of the plate-shaped glass. 3, 4, and 5 schematically show a cross section of a glass file 11 having a polished surface formed on one surface of a plate-shaped glass. As shown in Figs. 3, 4, and 5, the polishing surface 13 is formed by fine unevenness. FIG. 3 shows a case where the unevenness is a uniform pattern. FIG. 4 shows a case where the unevenness is an uneven pattern. The unevenness of the abrasive surface of an actual glass file is difficult to be completely uniform on a micro standard. The polishing effect of a glass file depends on the shape of the unevenness, that is, the depth of the unevenness and the interval between the unevenness. The degree of such unevenness can be quantified as "surface roughness". Glass files with high surface roughness work as so-called "rough" abrasive materials. Glass files with low surface roughness work as so-called "fine" abrasive materials.

The surface roughness of the novel glass file can be appropriately changed. In particular, as the new type electric nail polisher, glass files defined by JIS B 0031 and JIS B 0601 with various surface roughnesses of 10 μm to 100 μm are preferred.

In the present invention, there is no limitation on the method of mounting the abrasive portion on the head. The method of embedding the abrasive part in the frame provided on the head is generally a method in which a single surface of the head and a flat surface of a glass file are adhered by a hardening adhesive.

In the present invention, the head 3 can be replaced, and glass files with different surface roughnesses can be used according to the stage of nail grinding. A glass file with a large surface roughness is suitable for the initial grinding, and a glass file with a small surface roughness is suitable for dressing.

In the new model, even if the surface roughness is changed, the thickness of the glass file is hardly changed. Therefore, by changing only the glass file, a plurality of heads that can be replaced and have approximately the same shape can be combined into an electric nail polisher. This design is suitable for high-performance electric nail polishers called professional specifications. Further, in this case, it is easy to store a plurality of heads, which is advantageous for the overall design of the product.

In addition, as shown in FIG. 5, a glass file 11 in which a metal layer 14 such as chromium is provided on the surface can be used in the present invention. The metal layer 14 is formed by a vapor deposition method or the like.

As long as the operability of the new type electric nail polisher is not impaired, the shape of the head and the grinding part is not limited. For the sake of safety, it is preferable that the shapes of the tip of the head and the polishing portion be circular, for example, as shown in FIGS. 1, 2, and 6. By having such a round shape, the head and the grinding section can be used to polish the nails without hurting the fingers. In addition, for operability, it is preferable that the head portion and the polishing portion have a tapered tip shape as shown in FIGS. 1, 2, and 6, for example. By having such a tapered tip shape, the tip of the polishing portion can be used near the edge of the nail, and also the narrow portion of the nail surface can be selectively polished.

In addition, the motion conversion mechanism 7 shown in FIG. 1 and FIG. 2 can be designed to reciprocate the head 3 and the polishing section 4 at high speed in a plane parallel to the surface of the polishing section (width direction of the head). This kind of rotational motion is suitable for grinding the surface of a nail with a small radius of curvature (large slope). In the present invention, a mechanism capable of adjusting the rotation direction and the rotation speed of the head 3 and the grinding section 4 can be provided.

The glass file is thin, making it easy to cut into shapes that match the surface shape of the head. Therefore, the novel grinding section and head can be more compactly designed than a conventional electric nail polisher provided with a brush or a sheet-shaped grinding section. The novel type is beneficial to miniaturization of the electric nail grinder.

The Mohs hardness of glass is about 5, and the Mohs hardness of human nails is about 2.5. Therefore, when the abrasive portion 4 that is reciprocating at high speed comes into contact with the surface of the nail, only the nail is polished, and the glass file 11 constituting the abrasive portion 4 is hardly deformed and worn.

(Industrial Applicability) The new electric nail polisher has succeeded in improving the basic performance of the electric nail polisher by improving the grinding section directly related to the nail grinding performance. This new type of electric nail polisher has a wide range of designs and appearances. It can be a wide range of products from simple types to so-called professional specifications, or from small portable special products to products with multiple accessories for placement. series. Therefore, this new model provides consumers with more product options and higher quality goods.

In addition, the abrasive part of the new-type electric nail polisher is free from abrasion and deformation, so it can be used for a long time without changing the head, and less chips are generated during use. The novel electric nail grinder can improve the satisfaction of actual users.

1‧‧‧ Electric Nail Grinder
2‧‧‧ Ontology
3‧‧‧ head
4‧‧‧ Grinding Department
5‧‧‧ battery
6‧‧‧ Motor
7‧‧‧ Movement Conversion Agency
71‧‧‧axis
72‧‧‧ axis
73‧‧‧ Gear
74‧‧‧ Gear
8‧‧‧ Cover
9‧‧‧ cover
10‧‧‧ Power Switch
11‧‧‧ glass file
12‧‧‧ Surface of the nail
13‧‧‧ polished surface
14‧‧‧ metal layer
15‧‧‧ the edge of the nail

Fig. 1 schematically shows the use of the electric nail polisher of the new type. The arrows indicate the direction of movement.
FIG. 2 schematically shows the structure of the electric nail polisher of the present invention. Indicates the state where the cover is removed.
FIG. 3 schematically shows an example of a cross-section of a glass file constituting a polishing section of the electric nail polisher of the present invention. The upper side is the side in contact with the nails.
FIG. 4 schematically illustrates an example of a cross-section of a glass file constituting a polishing section of the electric nail polisher of the present invention. The upper side is the side in contact with the nails.
FIG. 5 schematically illustrates an example of a cross-section of a glass file constituting a polishing section of the electric nail polisher of the present invention. The upper side is the side in contact with the nails.
FIG. 6 schematically shows the head of the electric nail polisher of the present invention. The polishing portion is located on the back side of the paper surface and is not shown.

Claims (9)

An electric nail grinder includes a grinding portion including a glass file. The electric nail grinder according to item 1 of the patent application scope, wherein the glass file has a grinding surface formed on at least a portion of the glass. The electric nail polisher according to item 1 or item 2 of the patent application scope, wherein the glass file is formed on at least a part of the glass selected from flat glass, compressed glass, and hardened glass with a surface roughness of 10 μm or more and 100 μm This polished surface is as follows. The electric nail grinder according to any one of claims 1 to 2 of the patent application scope, wherein a metal layer is formed on a surface of the glass file. The electric nail grinder according to item 3 of the patent application scope, wherein a metal layer is formed on a surface of the glass file. The electric nail polisher according to any one of claims 1 to 2, wherein the grinding portion has a sharp tip shape. The electric nail polisher according to item 3 of the scope of patent application, wherein the grinding portion has a sharp tip shape. The electric nail polisher according to item 4 of the scope of patent application, wherein the grinding portion has a sharp tip shape. The electric nail polisher according to item 5 of the scope of patent application, wherein the grinding portion has a sharp tip shape.