JPH10201525A - Portable power nail filer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power nail filer which can attach a fan in the state of keeping small sized by improving the torque of a file without making expensive. SOLUTION: The file 7 and a flywheel 9 integrated with the fan 8 are attached to the output axis of a motor 6 housed inside of a case 2 in a portable power filer 1. As a nail insertion hole 31 is formed at a part corresponding the file 7 in the case 2, a nail can be filed from there. As the flywheel 9 is attached to the axis 61 of the motor 6, inertia moment operates to prevent the rotation of the file 7 from stopping at the time of pressing the nail to the file 7. As an air exhausting port 32 allowing a fan 8 to exhaust air sucked from the nail insertion hole is formed at the case 2 and a filter 10 is arranged at the middle position of the route of air, nail fled powder filed by the file 7 is caught by a filter 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable electric nail sharpener for shaving nails by rotating a file with a motor. More particularly, it relates to the structure of a portable electric nail sharpener.

[0002]

2. Description of the Related Art A portable electric nail sharpener for shaving nails by rotating a file with a motor is disclosed, for example, in Japanese Utility Model Laid-Open No. 6-305. In the portable electric nail sharpener disclosed in this publication, a file is directly attached to an output shaft of a motor, and the nail is sharpened when the nail is pressed against a file rotated by the motor. However, the portable electric nail sharpener having this configuration has a small torque because the file is directly attached to the output shaft of the motor, and if the nail is strongly applied to the file, the file may stop rotating.

[0003] A portable electric nail sharpener that avoids this problem is disclosed in, for example, Japanese Utility Model Laid-Open No. 6-79413. In the portable electric nail sharpener disclosed in this publication, the output of the motor is transmitted to the file via a rotation reduction mechanism using gears, so that the file rotates with high torque. Therefore, even if the nail is strongly pressed against the file, the file does not stop. Further, this publication discloses a portable electric nail sharpener in which not only a rotation reduction mechanism but also a fan is incorporated. Therefore, the shavings of the nails shaved by the file can be sucked into the case by the fan and accumulated there.

[0004]

However, if a rotation reduction mechanism using gears is provided to increase the torque of the file, the structure becomes more complicated than that in which the file is directly attached to the output shaft of the motor. In addition, a portable electric nail sharpener cannot be manufactured at low cost.

If a fan is built in, the case must be large so that both the rotation reduction mechanism and the fan can be accommodated in the case, and the size of the portable electric nail sharpener increases.

[0006] In view of the above problems, an object of the present invention is to provide a portable electric nail sharpener capable of increasing the file torque without increasing the cost while maintaining a small size. . It is another object of the present invention to provide a portable electric nail sharpener to which a fan for sucking nail shavings can be attached while being small.

[0007]

According to the present invention, there is provided a portable electric nail sharpener having a motor and a file for shaving a nail by rotating the motor. The flywheel is mounted on the shaft.

In the present invention, a flywheel is attached to the output shaft of the motor so that a moment of inertia acts on the output shaft of the motor. Therefore, the file can be rotated with high torque without using a complicated mechanism such as a rotation reduction mechanism. Therefore, the problem that the rotation of the file stops when the nail is pressed against the file can be avoided. Further, since this mechanism has a simple configuration in which a flywheel is simply mounted, it does not require much cost and is suitable for miniaturization of a portable electric nail sharpener.

In the present invention, a case accommodating the motor and the file and having a claw insertion hole capable of inserting a claw into contact with the file, a shaving powder of the claw cut by the file And a fan attached to an output shaft of the motor for sucking and accumulating the flywheel into the case through the claw insertion hole, and the flywheel is preferably formed integrally with the fan.

With this structure, the flywheel, which is a mechanism for increasing the file torque, and the fan for sucking the shavings of the claws are integrated with each other. There is no. Therefore,
Suitable for miniaturization of portable electric nail sharpener with fan.

In this case, the case is provided with an exhaust port for discharging air sucked together with shavings of the nail from the nail insertion hole by the fan, and the case is provided at an intermediate position in a path from the nail insertion hole to the exhaust port. It is preferable that a filter that captures shavings of the nail is disposed on the filter.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external view showing a portable electric nail sharpener to which the present invention is applied.

As shown in FIG. 1, a portable electric nail sharpener 1 has a cylindrical case 2 as a whole. The case 2 includes a file storage section 3 formed at the upper end thereof, a motor storage section 4 formed at the center, and a dry battery storage section 5 formed at the lower half. The battery compartment 5 is detachable from the connection portion 51 with the motor compartment 4, and the battery 11 is accommodated in the battery compartment 5 from the separated portion. The motor housing 4 houses a motor 6 driven by the dry batteries 11 stored in the dry battery housing 5. The output shaft of the motor 6 protrudes toward the inside of the file storage unit 3.

FIG. 2A is a partial cross-sectional view for explaining the internal structure of the file storing section 3, and FIG. 2B is a cross-sectional view showing a part cut along the line AA in FIG. It is.

In FIG. 1 and FIG.
The lower half 34 having the same diameter dimension as the motor housing 4 and having a cylindrical cross section, and a retreating portion 33 in which approximately half of the outer peripheral surface is inwardly recessed as compared with the lower half 34. And an upper half 35 formed in an elliptical cross section.
A slit-shaped nail insertion hole 31 extending in the circumferential direction is formed in the retreating part 33 of the upper half part 35, from which a nail can be inserted into the case 2. A slit-like exhaust port 32 extending in the circumferential direction is also formed in the lower half portion 34, from which air inside the case 2 is exhausted by the fan 8 described later.

In the upper half 35 of the file storage section 3, a column-shaped file 7 having an outer peripheral surface 71 is stored. The file 7 is coaxially fixed to the output shaft 61 of the motor 6 at the center of the case 2, so that the retreating portion 33 of the upper half 35 and the outer peripheral surface 71 of the file 7 are in close proximity. . Further, the thickness of the retreating portion 33 is as shown in FIG.
As shown in (b), the central portion facing the outer peripheral surface 71 of the file 7 is thin. Therefore, when the nail is inserted from the nail insertion hole 31 formed in the retreating portion 33, the nail comes into contact with the outer peripheral surface 71 of the file 7. Therefore, if the file 7 is rotated by the motor 6, the nail inserted from the nail insertion hole 31 can be scraped.

A fan 8 mounted coaxially with an output shaft 61 of the motor 6 is housed in the lower half 34 of the file housing 3. The fan 8 has a configuration in which a plurality of radially arranged blades are vertically sandwiched between two disks, and the outer diameter of the fan 8 is slightly smaller than the inner diameter of the lower half 34.

A circular hole is formed in the center of the upper disk of the fan 8, and a filter 10 is mounted therein. The fan 8 is arranged so that the blades face the exhaust port 32. Therefore, when the fan 8 is rotated by the motor 6, air is sucked from the claw insertion hole 31 as shown by an arrow B in FIG.
0 and is discharged from the exhaust port 32. in this way,
The case 2 is provided with an exhaust port 32 for discharging air sucked from the nail insertion hole 31 by the fan 8. Is disposed, the shavings of the nails shaved by the file 7 are sucked into the case 2 and captured by the filter 10.

In this embodiment, the blades of the fan 8 are formed of resin, while the two disks sandwiching the upper and lower portions are made of, for example, iron. The flywheel 9 has a weight with an appropriate moment of inertia. Therefore, once the output shaft 61 of the motor 6 starts to rotate, the flywheel 9 exerts a moment of inertia to make it difficult to stop. That is, even if the nail is strongly pressed against the outer peripheral surface 71 of the file 7, the nail can be scraped without stopping the rotation of the file 7.

As described above, in the portable electric nail sharpener 1 of the present invention, the flywheel 9 is attached to the output shaft 61 of the motor 6 so that a moment of inertia acts on the output shaft 61 of the motor 6. Therefore, the file 7 can be rotated with a high torque without using a complicated mechanism such as a rotation reduction mechanism. Therefore, the problem that the rotation of the file 7 stops when the nail is pressed against the file 7 can be avoided. This mechanism is a flywheel 9
Because it is a simple configuration that only requires mounting, there is no significant cost. Therefore, the portable electric nail sharpener 1 in which the torque of the file 7 is increased can be manufactured at low cost.

The output shaft 61 of the motor 6 is provided with a fan 8 for sucking not only the flywheel 9 but also nail shavings shaved by the file 7 into the case 2. These may be configured separately, but in this embodiment, since the flywheel 9 and the fan 8 are integrated, it is not necessary to make the case 2 large in order to store them. Therefore, even if the fan 8 is attached, the portable electric nail sharpener 1 does not increase in size.

In the above embodiment, the upper and lower discs of the fan 8 are iron flywheels 9, but only one of the upper and lower sides is a flywheel 9 made of iron or the like, and the other is a flywheel 9 made of iron. Similarly, a resin molded structure may be used. Further, the entire fan 8 may be formed of iron or the like to form a flywheel. The flywheel may be made of a material having a weight at which an appropriate moment of inertia acts on the output shaft 61 of the motor 6, and is not limited to iron. The weight of the flywheel is appropriately set in consideration of the diameter of the flywheel, the magnitude of the output of the motor 6, the magnitude of the torque required by the file 7, and the like.

[0024]

As described above, the portable electric nail sharpener of the present invention is characterized in that the flywheel is attached to the output shaft of the motor. Therefore, since the moment of inertia acts on the output shaft of the motor, it is possible to prevent a problem that the rotation of the file is stopped by pressing the pawl against the file without using a complicated mechanism such as a rotation reduction mechanism. As described above, the simple configuration does not increase the cost, and a portable electric nail sharpener with an increased file torque can be manufactured at low cost. Further, since the flywheel can be integrated with a fan for sucking nail shavings shaved by a file, there is an advantage that the portable electric nail sharpener does not increase in size even if the fan is attached.

[Brief description of the drawings]

FIG. 1 is an external view showing a portable electric nail sharpener to which the present invention is applied.

FIG. 2A is a partial cross-sectional view for explaining an internal structure of a file storing section, and FIG. 2B is a cross-sectional view showing a part cut along line AA in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Portable electric nail sharpener 2 Case 3 File storage part 31 Claw insertion hole 32 Exhaust port 4 Motor storage part 5 Dry cell storage part 6 Motor 61 Output shaft 7 File 8 Fan 9 Flywheel 10 Filter

Claims (3)

[Claims] 1. A portable electric nail sharpener having a motor and a file for sharpening a nail by being rotated by the motor, wherein a flywheel is attached to an output shaft of the motor. Electric nail sharpener. 2. The case according to claim 1, further comprising a claw insertion hole for accommodating the motor and the file and having a claw insertion hole capable of inserting a claw into contact with the file, and a claw cut by the file. And a fan attached to an output shaft of the motor for sucking and storing the shavings from the claw insertion hole into the case, wherein the flywheel is formed integrally with the fan. Features a portable electric nail sharpener. 3. The case according to claim 2, wherein the case includes an exhaust port configured to exhaust air sucked together with shavings of the nail from the nail insertion hole by the fan, and a case extending from the nail insertion hole to the exhaust port. A portable electric nail sharpener, characterized in that a filter for capturing nail shavings is arranged at an intermediate position.