JP2001062724A - Keratin grinding implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent ground chips from causing an uncomfortable feeling as well as to suppress the scattering of them. SOLUTION: This implement is provided with a cylindrical file 3 driven to rotate and a cover 4 covering the external periphery of this file 3. The cover 4 has an opening part 40 for making the file 3 abut a ground part. The cover 4 is formed of antistatic material and transparent material. Ground chips are prevented from adhering to an inner surface of the cover capable of ensuring visibility of grinding work, by preventing scattering of the ground chips also making the cover transparent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keratin grinding tool for shaving thickened keratin generated on limbs and the like.

[0002]

2. Description of the Related Art There are two methods for removing keratin, such as octopus and fish eyes and thick skin, by removing them with nail clippers, scissors, knives, etc., and by using pumice stones or files to abrade. Although removal can be performed in a short time, there is a high possibility that pain or bleeding may occur. On the other hand, in the case of attrition, time and labor are required. For this purpose, a horny grinding tool using a file that is electrically driven to rotate is provided. In this case, the keratin can be abraded in a short time.

[0003] Two types of methods, a wet type and a dry type, can be used for abrasion removal of keratin. In the wet method, keratin is soaked in hot water to soften and grind it, but in actuality keratin such as octopus and fish eyes and thick skin are less likely to absorb water than normal keratin, so in a short time Not only does it not soften, but even if it is softened by immersing it in hot water for a long time, normal keratinous parts absorb more water and soften. is there. In addition, keratin in a state of water absorption often feels rough if it is dried even if it is intended to be finely ground. Also, in the operation of grinding itself, grinding a hard object is more efficient than a soft one. In addition, when grinding by wet grinding, work is often performed in the bathroom, but the bathroom is a hot and humid environment and is considered a hotbed of various germs. It is considered that grinding with a steel is preferable in terms of efficiency, hygiene, and finish quality.

[0004] On the other hand, a problem in dry grinding is scattering of grinding dust. Grinding dust having a small mass and fine powder scatters in the air and floats, causing discomfort. For this purpose, there has been proposed a device in which the periphery of an electrically driven file is covered with a cover to suppress the scattering of grinding dust.

[0005]

However, grinding dust adhering to the inner surface of the cover made of a transparent material is a new problem for ensuring the visibility of the working state. This is to make the user uncomfortable by deteriorating the appearance or impairing the cleanliness. In addition, the more the cover covers the file, the more the dust can be prevented from scattering.However, such a cover hits the periphery of the part to be ground when the file is applied to the part to be ground, thus hindering the grinding operation. Would.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the scattering of grinding debris and to reduce the occurrence of discomfort caused by grinding debris. Another object of the present invention is to provide a horny grinding tool in which the presence of a cover for suppressing the scattering of grinding dust does not deteriorate the workability of the grinding operation.

[0007]

According to the present invention, there is provided a cylindrical file which is rotationally driven, a cover which covers an outer periphery of the file, and an opening for bringing the file into contact with a portion to be ground. The horny grinding tool provided on the cover is characterized in that the cover is formed of an antistatic material and a transparent material. Grinding powder does not adhere to the inner surface of the transparent cover.

[0008] The cover is formed as a translucent material so that the adhered grinding powder is not noticeable, or a cleaning member that slides on the inner surface of the cover is provided on the cover to facilitate the cleaning of the adhered grinding powder. You may.

The present invention also provides a horny grinding machine having a cylindrical file that is driven to rotate, a cover that covers the outer periphery of the file, and an opening in the cover for bringing the file into contact with the part to be ground. The device is characterized in that the cover has a grinding powder storage chamber on its inner surface and on the side of the file in the direction of rotation of the file when viewed from the opening. Grinding powder can be stored in the storage chamber.

In this case, a wall may be provided which projects from the inner surface of the cover to the file side and guides the grinding powder into the storage chamber, in particular, a wall whose tip contacts the outer peripheral surface of the file, or an exhaust port is provided in the storage chamber. Preferably, at least the storage chamber is made detachable, or the cover is transparent and the storage chamber portion is preferably translucent or opaque.

The present invention further provides a horny grinding machine having a cylindrical file that is driven to rotate, a cover that covers the outer periphery of the file, and an opening in the cover for bringing the file into contact with a portion to be ground. The device is characterized in that the cover is rotatable about the rotation axis of the file and the opening direction of the opening is variable. Irrespective of how the body is held, the file can be brought into contact with the portion to be ground through the opening, and the cover can be prevented from hindering the grinding operation.

At this time, a sliding resistance portion for giving resistance to the rotation of the cover is provided, a positioning portion for positioning the cover in a predetermined direction is provided, and a spring for returning the cover to the initial position with the rotation of the cover is provided. If provided, the usability will be even better.

According to the present invention, there is provided a cylindrical file which is driven to rotate, a cover which covers an outer periphery and a tip side of the file, and an opening for bringing the file into contact with a portion to be ground is provided in the cover. The keratin grinding tool is characterized in that the cover is formed as a movable member that retreats by receiving an external force in a direction perpendicular to the rotation axis of the file and projects the file from the opening. Also in this case, it is possible to prevent the cover from hindering the grinding operation by the file, and in this case, the outer peripheral surface of the file is positioned deeper than the opening surface of the opening for improving safety. There is no problem.

If a spring elastic member for returning the cover to the initial position is provided, the usability is improved.
If you have a shutter that opens and closes the opening of the cover,
In particular, if the shutter locks the cover in a non-movable state when closing the opening, the safety can be further enhanced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an example of an embodiment. The horny grinding tool shown in FIG. 1 is cylindrical and houses a motor 10 and a battery 11 therein. An output shaft 12 of the motor 10 is protruded from one end of the cylindrical housing 1, and a rotating body 30 whose outer peripheral surface is formed of a file 3 is attached to the output shaft 12. Has a cover 4 provided with an opening 40 for exposing a part of the rotating body 30 (file 3). The cover 4 that covers approximately the axial front end side of the rotating body 30 and about ２ of the outer periphery of the rotating body 30.
Is made of a transparent material having antistatic properties, which improves the visibility of the grinding situation when the rotating file 3 is applied to a part to be ground and grinds, and the grinding debris adheres to the inner surface by static electricity It is to prevent that. The cover 4 made of a transparent material may be coated with an antistatic material.

The cover 4 may be made of a translucent material, or may be made translucent by forming minute irregularities on the inner surface side of the cover 4 made of a transparent material. Even if grinding debris adheres to the inner surface, there is little change in appearance and it does not cause discomfort, and the grinding situation by the file 3 can be roughly grasped, and the fear of the file 3 rotating at high speed Can be reduced. Even when the cover 4 is made translucent, it is of course preferable that grinding dust is hardly adhered by antistatic.

FIG. 2 shows another example. Here, a wiping member 5 that is in contact with the inner surface of the cover 4 is slidably attached to the cover 4 so that grinding debris that has adhered to the inner surface of the cover 4 can be easily removed. When the wiping member 5 is moved along the vertical groove 4 a provided in the cover 4, the wiping member 5 in contact with the inner surface of the cover 4 is attached to the inner surface of the cover 4 and the gap between the opening 40 of the cover 4 and the file 3. Brush off grinding debris, which is difficult to clean from. Further, since the cover 4 can be cleaned without removing the cover 4 from the housing 1, even if the visibility is deteriorated or the appearance is deteriorated by the cutting chips, the original state can be easily restored.

The keratin grinding tool shown in FIGS. 3 and 4 is provided with storage chambers 41, 41 which open toward the back near the opening edge of the opening 40 on the inner peripheral surface of the cover 4. When using the horny grinding tool, a file 3 that is rotationally driven while holding the housing 1 with the opening 40 side of the cover 4 facing downward is applied to the portion to be ground.
At this time, grinding dust generated by grinding and soaring by the rotation of the file 3 and filling the cover 4 gradually falls due to gravity and enters the storage chambers 41, 41 and is accumulated. This reduces the amount of grinding debris that falls out of the cover 4 and adheres to the skin around the part to be ground.

In FIG. 4, the storage chambers 41, 41 are provided on both sides of the opening edge of the cover 4, but as shown in FIG. 5, the storage chamber 41 is provided only on one side. Good. However, when the opening 40 is viewed from the front, the storage chamber 41 is provided on the side of the file 3 in the rotation traveling direction.
Grinding debris that has been thrown toward the traveling direction by the rotation of the file 3 can be efficiently collected.

As shown in FIG. 6, if the wall 42 projects from the inner surface of the cover 4 to the back of the storage chamber 41 toward the file 3, the air flow accompanying the rotation of the file 3 and this air flow can be reduced. Since the riding grinding chips can be forcibly guided to the storage chamber 41, the grinding chips leaking out of the cover 4 can be further reduced.

At this time, the tip of the wall 42 on the side of the file 3 is
As shown in FIG. 7, if a member 43 for filling the gap between the file 3 is provided, it is possible to more efficiently collect grinding dust. As the member 43, a member that can be brought into contact with the file 3 that rotates at a high speed, for example, a brush-like member shown in FIG. 8 is preferable, but an elastic member or a foam member may be used. By using the member 43 that can be brought into contact with the surface of the file 3,
Grinding powder adhering to the surface can be sieved off,
The effect of preventing clogging of the ground surface of the file 3 can also be obtained.

As shown in FIG. 9, an exhaust port 4 is
It is also preferable to provide 4. When the air escapes from the exhaust port 44, the grinding dust easily enters the storage chamber 41. Of course, the exhaust port 44 is provided with a filter 45 for preventing grinding chips from coming off. Such an exhaust port 44 is particularly effective in the case where a wall 42 is provided and grinding dust is forcibly fed into the storage chamber 42.

In view of the convenience of discarding the grinding debris accumulated in the storage chamber 41, as shown in FIGS. 10 and 11, the cover 4 having the storage chamber 41 can be removed from the housing 1, Alternatively, as shown in FIGS. 12 to 14, it is preferable that the accommodation chamber 41 can be detached from the cover 4. Reference numeral 46 in FIG. 10 denotes a hook for locking the cover 4 to the housing 1, and reference numeral 4 in FIG.
Reference numeral 7 denotes a mounting groove which makes the storage chamber 41, which is another component, detachable in a slidable manner.

The cover 4 is formed of a transparent or translucent material as described above from the viewpoint of visual recognition of the grinding state.
It is preferable to form the opaque material 48 as shown in FIG. It is possible to eliminate the discomfort caused by seeing the grinding dust accumulated in the storage chamber 41. The cover 4 may be transparent, and the storage chamber 41 may be translucent. in this case,
Since the amount of grinding waste accumulated in the storage chamber 41 can be checked, the disposal time of the accumulated grinding waste can be grasped.

FIGS. 17 to 19 show other examples. The keratin grinding tool here has a cover 4 attached to one end of a housing 1 having a flat elliptical cross section via a base 6. The base 6 is, as shown in FIG. A slide groove 60 having a center angle of approximately 90 ° with which the click spring portion 16 provided at the one end is slidably engaged.
Are provided on the inner peripheral surface, and engagement grooves 61 and 62 are provided at both ends of the slide groove 60, respectively, so that the base 6 can be rotated about the output shaft 12 with respect to the housing 1 within a range of 90 °. At the same time, the click spring 15 can be positioned by engaging the engagement grooves 61 and 62 at both ends of the rotation range.

When the housing 1 has the above-described cross-sectional shape, personal preference is reflected in how the housing 1 is held, and when the opening 40 of the cover 4 is open in a specific direction, Some people find it difficult to use. Further, depending on the location of the portion to be ground, the housing 1 may be used while being changed, and at this time, the relationship between the cross-sectional shape of the housing 1 and the opening direction of the cover 40 may be difficult to use. For this purpose, the opening direction of the opening 40 of the cover 4 can be changed as shown in FIG. 19 by rotating the base 6.

Changing the opening direction of the opening 40 of the cover 4 can also be achieved by keeping the cover 4 rotatable about the axis of the output shaft 12 and, in this case, a file for grinding. When the opening 3 of the cover 4 is not close to the portion to be ground when the cover 3 is brought close to the portion to be ground, the cover 4 rotates when the opening edge of the opening 40 hits the periphery of the portion to be ground. In addition, there is an advantage that the opening 40 faces the portion to be ground and the file 3 can be brought into contact with the portion to be ground accurately.

However, if the cover 4 is rotatable, the opening direction of the opening 40 is undefined, and the user must check the opening direction of the opening 40 each time it is used. In particular, the fact that the center of gravity of the cover 4 is deviated due to the presence of the opening 40 and the opening 40 is likely to face upward poses many problems in view of the fact that the opening 40 is used facing downward. For this purpose, FIG.
As shown in FIG. 0, a sliding resistance portion 64 that provides a required resistance to rotation of the cover 4 around its axis may be provided between the cover 4 and the base 6 (or the housing 1 if the base 6 is not provided). . The sliding resistance generated by the sliding resistance portion 64 is larger than the rotational moment due to the eccentric weight of the cover 4 and smaller than the rotational force generated when the opening edge of the opening 40 of the cover 4 is applied to the portion to be ground. . There is no inadvertent rotation of the cover 4, and the opening 40 can face the part to be ground so that the file 3 can be brought into contact with the part to be ground accurately.

In the case where the base 6 is provided so that the opening direction of the opening 40 of the cover 4 can be changed, the rotation range of the cover 4 with respect to the base 6 is limited to, for example, 20 ° or less. Thus, the point that the opening direction of the opening 40 can be changed and the advantage that the opening 40 of the cover 4 automatically faces the portion to be ground can be obtained without causing other adverse effects. be able to.

Further, as shown in FIGS. 21 to 24, the cover 4 and the base 6 are provided with a torsion coil spring 7 whose both ends are locked, and the state shown in FIGS. 23 (b) and 24 (b) is changed. If the cover 4 is returned to the original state by the spring when the cover 4 is rotated in any direction, the opening 40 of the cover 4 is always oriented in a predetermined direction when the base 6 is rotated. The cover 4 rotates depending on the degree of contact with the part, and the state in which the opening 40 faces the part to be ground can be obtained, and the usability is further improved. Even when the base 6 is not provided, the torsion coil spring 7
Is effective in improving usability. FIG. 25 shows an example in this case.

FIGS. 26 to 28 show another example. In the horny grinding tool shown here, the cover 4 is
Is mounted on a shaft 49 in a direction perpendicular to the output shaft 12 and the cover 4 is urged in a rising direction by a spring 73 which is a torsion coil spring.
Although the file 3 covers the file 3, the cover 4
When the camera falls down, the exposure of the file 3 is increased. In the cover 4 fixed to the housing 1, when the horny grinding tool is obliquely applied to the skin S, the tip side of the cover 4 hits the skin S and the cover 4 is in the way. As shown in FIG. 4, the cover 4 is retracted to expose the tip of the file 3, so that the cover 4
The cover 4 is returned by the spring 73 and covers the file 3 when it is separated from the skin S without getting in the way.

As shown in FIGS. 29 to 31, the cover 4 itself has an elastic portion 74 instead of the spring 73, or as shown in FIG. 32, the entire cover 4 is formed of an elastic material. In addition, the same operation and effect can be obtained, and the cost can be reduced because the number of parts can be reduced. When the entire cover 4 is formed of an elastic material, the elastic modulus of the cover 4 is set so that the elastically deformed cover 4 does not hit the file 3, and the cross-sectional area of the root of the cover 4 is reduced. Thus, the retreating operation of the cover 4 is caused by bending of this portion.

In the horny grinding tool shown in FIGS.
Slide guides 15, 15 are integrally provided on both sides of the end of the housing 1, and the cover 4 is slidably held by the slide guide 15 in the front-rear direction orthogonal to the axial direction of the output shaft 12, and the cover 74 is fixed by a spring 75. When the file 4 is urged forward (toward the opening 40 side) to bring the file 3 into contact with the skin S, if the cover 4 hits the skin S, the cover 4 retreats against the spring 75 and hinders the grinding operation. I try not to be.

In any case, when the cover 4 does not retreat when the cover 4 hits the skin S so as not to hinder the grinding operation by the file 3, as is apparent from FIGS. Even if the file 3 is positioned deeper than the opening face of the opening 40 of the opening 4, there is no problem in the grinding operation, and when the file 3 comes into contact with the skin S and starts grinding, or Immediately before the termination, it is possible to prevent the grinding dust from scattering from the gap between the cover 4 and the skin S to the outside.

The shutter 8 may be provided in the opening 40 provided in the cover 4. The keratin grinding tool shown in FIGS. 36 and 37 is a sliding shutter 8 for opening and closing an opening 40 in a cover 4 having the configuration shown in FIGS.
By closing the shutter 8 when not in use, the exposure of the file 3 can be prevented. Even if the power switch is turned on and the file 3 is rotated inadvertently, the surrounding area is ground or damaged. Can be prevented. In addition, the shutter 8 is held in a closed state by a click unit or a lock unit, and the shutter 8 is engaged with the cover 4 to prevent the cover 4 from rotating around the shaft 49 so that the cover 8 is closed. The file 4 can be prevented from being exposed to external force and the file 3 being exposed.
When the shutter 8 is opened, the shutter 8 is housed in the housing 1 and the engagement with the cover 4 is released, so that the rotation of the cover 4 around the shaft 49 may be hindered. There is no.

The shutter 8 is, as shown in FIG.
The opening 40 may be opened and closed by rotation about 0, or may be stored in the inner surface of the cover 4 in a slidable manner as shown in FIG. 38, a joint 17 connecting the output shaft 12 and the rotating body 30;
Reference numeral 18 denotes a slide guide of the shutter 4 and 19 denotes a stopper.

[0037]

As described above, according to the present invention, a cover provided with an opening for covering the outer periphery of a cylindrical file that is driven to rotate and for bringing the file into contact with a portion to be ground is made of an antistatic material and transparent. Since it is formed of a material, the visibility of the grinding work is high and the scattering of the grinding powder can be suppressed.In addition, the grinding powder does not adhere to the inner surface of the transparent cover, and the Pleasure does not occur.

Further, in the case where the cover is formed as a translucent material, even if grinding dust adheres to the inner surface of the cover, the grinding powder is inconspicuous because the grinding powder is not conspicuous, and the visibility is secured to some extent. it can.

When the cover is provided with a cleaning member slidably in contact with the inner surface of the cover, the grinding powder adhering to the cover can be easily cleaned, so that it is possible to prevent the accumulated grinding dust from causing discomfort.

Furthermore, in the case where the grinding powder storage chamber is provided on the inner surface of the cover and on the side of the file in the direction of rotation of the file as viewed from the opening, the grinding powder can be efficiently stored in the storage chamber. As a result, it is possible to eliminate discomfort due to grinding dust spilling from between the cover for preventing scattering and the file.

In this case, if a wall is provided that projects from the inner surface of the cover toward the file side to guide the grinding powder into the storage chamber, or if an exhaust port is provided in the storage chamber, grinding dust is more efficiently collected in the storage chamber. By providing a wall whose tip is in contact with the outer peripheral surface of the file, it is possible to prevent grinding files attached to the file from dropping and to prevent the file from being clogged. It is easy to dispose of the grinding debris that accumulates in the storage chamber, and if the cover is transparent and the storage chamber is translucent or opaque, the discomfort caused by seeing the grinding debris in the storage chamber without lowering the visibility of the grinding work can be reduced. Can be eliminated.

Further, if the cover is rotatable about the file rotation axis and the opening direction of the opening is variable, the file can be brought into contact with the portion to be ground through the opening regardless of how the body is held. When the opening edge of the opening of the cover hits the periphery of the part to be ground, the cover rotates and the opening is directly opposed to the part to be ground, so that the cover does not interfere with the grinding operation due to the file. Can be.

At this time, the orientation of the opening of the cover may be undefined if a sliding resistance portion that gives resistance to the rotation of the cover is provided or a positioning portion that positions the cover in a predetermined direction is provided. Therefore, if a spring for returning the cover to the initial position with respect to the rotation of the cover is provided, the usability is further improved.

Also, a cylindrical file which is driven to rotate is
A cover for covering the outer periphery and the tip side of the file and a cover provided with an opening for bringing the file into contact with the part to be ground. With a movable member that retracts and projects the file from the opening, it is possible to prevent the cover from hindering the grinding operation when grinding using the tip end of the file. Even if the outer peripheral surface of the file is positioned deeper than the opening surface of the opening of the cover to improve safety, no problem occurs in terms of usability. Particularly, by providing a spring elastic member for returning the cover to the initial position, usability can be further improved.

In the case where a shutter for opening and closing the opening of the cover is provided, even if the switch is turned on carelessly and the file is rotated, the surrounding file may be damaged or damaged. Can be prevented,
In particular, if the shutter is provided with the movable cover and the shutter is locked in a non-movable state when the shutter closes the opening, the safety can be further enhanced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an example of an embodiment of the present invention.

FIG. 2 shows another example of the above, in which (a) and (b) are longitudinal sectional views,
(c) is a horizontal sectional view.

FIG. 3 is a longitudinal sectional view of an example of another embodiment.

4 (a) is a horizontal sectional view of the above, and FIG. 4 (b) is a horizontal sectional view of the same.

FIG. 5 is a horizontal sectional view of another example of the above.

FIG. 6 is a horizontal sectional view of still another example of the above.

FIG. 7 is a horizontal sectional view of another example of the above.

FIG. 8 is a horizontal sectional view of still another example of the above.

FIG. 9 is a horizontal sectional view of a different example of the above.

FIGS. 10A and 10B show another example of the above, in which FIG. 10A is a horizontal sectional view and FIG. 10B is a vertical sectional view.

FIG. 11A is a plan view of the cover, and FIG. 11B is an exploded side view of the cover.

FIG. 12 shows still another example of the above, wherein (a) is a plan view and (b) is a side view.

FIG. 13 shows a cover of the above, wherein (a) is a plan view,
(b) is a side view.

14A and 14B show a storage room of the above, wherein FIG.
(b) is a side view.

FIG. 15 is a horizontal sectional view of still another example.

FIG. 16 is a horizontal sectional view of still another example.

FIG. 17 is a cutaway side view of an example of another embodiment.

FIGS. 18 (a) and (b) are horizontal sectional views of a base portion of the above.

19A and 19B show a state where the base is rotated, FIG. 19A is a plan view, and FIG. 19B is a side view.

FIG. 20 is a cutaway side view of another example of the above.

FIG. 21 shows still another example of the above, wherein (a) is a plan view and (b) is a cutaway side view.

FIGS. 22 (a) and (b) are horizontal sectional views of the same.

FIG. 23 shows the same operation as above, and (a), (b) and (c) are horizontal sectional views.

FIG. 24 shows the same operation as above, and (a), (b), and (c) are horizontal cross-sectional views.

FIG. 25 is a cutaway side view of another example.

26 shows an example of another embodiment, in which (a) is a horizontal sectional view and (b) is a side view.

FIG. 27 is a cutaway side view of the same.

FIG. 28 is a cutaway side view showing the same operation.

FIG. 29 shows another example of the above, wherein (a) is a horizontal sectional view and (b) is a side view.

FIG. 30 is a cutaway side view of the same.

FIG. 31 is a cutaway side view showing the above operation.

FIG. 32 is a cutaway side view showing the operation of still another example of the above.

FIG. 33 shows another example of the above, wherein (a) is a side view,
(b) is a longitudinal sectional view, and (c) is a cutaway rear view.

34 (a) and (b) are horizontal sectional views of the same.

35 (a) and (b) are side views showing the operation of the above.

FIG. 36 is a longitudinal sectional view of an example of still another embodiment.

37 (a) and (b) are cutaway side views of the same.

FIG. 38 is a longitudinal sectional view of another example of the above.

39 shows another example of the above, and (a) and (b) are horizontal sectional views. FIG.

[Explanation of symbols]

 3 File 4 Cover 40 Opening

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kazuhiro Takesue 1048 Kadoma Kadoma, Osaka Pref. Matsushita Electric Works, Ltd. F term (reference) 3C047 JJ01 3C058 AA03 AA16 AC05 CB03 DB08

Claims (21)

[Claims] 1. A horny grinding tool comprising: a cylindrical file that is driven to rotate; and a cover that covers the outer periphery of the file, and an opening in the cover for bringing the file into contact with a part to be ground. A keratin grinding tool wherein the cover is formed of an antistatic material and a transparent material. 2. A keratin grinding tool comprising: a cylindrical file that is rotationally driven; and a cover that covers an outer periphery of the file, and an opening for contacting the filed portion with the file is provided on the cover. A keratin grinding tool characterized in that the cover is formed as translucent. 3. The keratin grinding tool according to claim 2, wherein the cover is made of a transparent material and has a semi-transparent surface with fine irregularities formed on an inner surface thereof. 4. A keratin grinding tool comprising: a cylindrical file that is driven to rotate; and a cover that covers an outer periphery of the file, and an opening in the cover for bringing the file into contact with a part to be ground is provided on the cover. A horny grinding tool, wherein a cleaning member that slides on the inner surface of the cover is provided on the cover. 5. A keratin grinding tool comprising: a cylindrical file that is driven to rotate; and a cover that covers an outer periphery of the file, and an opening in the cover for bringing the file into contact with a portion to be ground is provided on the cover. A horny grinding tool characterized in that the cover has a grinding powder storage chamber on the inner surface thereof and on the side of the file in the direction of rotation of the file as viewed from the opening. 6. The keratin grinding tool according to claim 5, wherein the cover has a wall protruding from the inner surface thereof toward the file side to guide the grinding powder into the storage chamber. 7. The keratin grinding tool according to claim 6, wherein the wall has a tip contacting the outer peripheral surface of the file. 8. The keratin grinding tool according to claim 5, wherein the storage chamber has an exhaust port. 9. The keratin grinding tool according to claim 5, wherein at least the storage chamber of the cover is detachable. 10. The keratin grinding tool according to claim 5, wherein the cover is transparent and the storage chamber portion is translucent or opaque. 11. A keratin grinding tool comprising: a cylindrical file that is driven to rotate; and a cover that covers an outer periphery of the file, and an opening in the cover for bringing the file into contact with a portion to be ground is provided on the cover. A keratin grinding tool characterized in that the cover is rotatable about the rotation axis of the file and the opening direction of the opening is variable. 12. The keratin grinding tool according to claim 11, further comprising a sliding resistance portion for providing resistance to rotation of the cover. 13. The keratin grinding tool according to claim 11, further comprising a positioning portion for positioning the cover in a predetermined direction. 14. The stratum corneum according to claim 13, further comprising a base rotatable with respect to the main body and positioned in a predetermined direction, wherein the cover is rotatably attached to the base. Grinding equipment. 15. The keratin grinding tool according to claim 11, further comprising a spring that returns to an initial position with respect to rotation of the cover. 16. A horny grinding machine comprising: a cylindrical file that is driven to rotate; a cover that covers an outer periphery and a tip side of the file; and an opening in the cover for bringing the file into contact with a portion to be ground. A keratin grinding tool, wherein the cover is formed as a movable member that retreats by receiving an external force in a direction orthogonal to the rotation axis of the file and projects the file from the opening. 17. The file system according to claim 16, wherein an outer peripheral surface of the file is located deeper than an opening surface of the opening of the cover.
A keratin grinding tool as described. 18. The keratin grinding tool according to claim 16, further comprising a spring elastic member for returning the cover to an initial position. 19. The keratin grinding tool according to claim 16, further comprising a shutter for opening and closing the opening of the cover. 20. The keratin grinding tool according to claim 19, wherein the shutter locks the cover in a non-movable state when the opening is closed. 21. A horny grinding machine comprising: a cylindrical file that is rotationally driven; a cover that covers an outer periphery and a tip side of the file; and an opening in the cover for bringing the file into contact with a portion to be ground. A horny grinding tool, comprising: a tool for opening and closing a cover opening.