JPH0341603Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an electric nail polishing machine, and particularly to a mounting structure for an abrasive piece.

[Background of the idea]

As an electric nail polisher that reciprocates the polishing section, a technique disclosed in US Pat. No. 3,240,966 is known. As shown in FIG. 7, this is constructed by inserting an abrasive piece 54 into the tip of a drive shaft 53 driven by a motor 51 and a cam portion 52. However, polishing piece 5
4 into the drive shaft 53 is the same as the reciprocating direction, so if the inertia force due to the reciprocating movement or the sliding friction force between the nail surface and the polished surface 54a that occurs during nail polishing is large, There is a risk that the polishing piece 54 may fall off from the drive shaft 53, and in the event that it falls off, the drive shaft 53 may accidentally hit the nail, causing scratches on the nail during polishing. Furthermore, nail polishing is often performed by pressing the tip of the polishing surface 54a against the nail, but since the rear end of the polishing piece 54 is cantilevered by the drive shaft 53, the supporting force is unstable. However, there was a problem in that the free end of the tip would bend or wobble during nail polishing, making it difficult to reliably press the polishing surface 54a against the nail surface.

Also, as in the electric nail polishing machine shown in Utility Model Application No. 50-73996, the file 9 and the pin 8 of the rod 7 are removably mounted on the shaft, and the file 9 is reciprocated along the guide rail 12. is also known, but since the file 9 is equipped with a cap 11 having a guide rail 12 around its periphery, the abrasive debris generated by the file 9 is surrounded by the cap 11 and is difficult to be discharged to the outside, but does not enter the guide rail 12. However, this tends to reduce the guiding effect and increase the load, making the device bulky and requiring complicated installation work, which is inconvenient for electric nail polishing machines that require frequent replacement. In particular, this type of nail polishing machine is used by women and girls who are not familiar with handling the machine, so it is desirable that the machine be easy to handle.

[Purpose and overview]

The present invention was made in view of the above circumstances, and the purpose of the present invention is to provide an electric nail polishing machine that allows stable nail polishing by attaching an abrasive piece easily and firmly. .

For this purpose, the present invention is attached to the lower surface of the attachment part 21 provided on one end surface of the main body case 1 so as to be able to reciprocate from below, and in this attached state, the reciprocating drive part 10 inside the main body case 1 is operated in the reciprocating direction Q. a base part 22 that is driven by the base part 22; and an abrasive piece 2 that is detachably attached to the lower surface of the base part 22 from below.
3, and in this attached state, transmission parts 40 and 42 abut to drive in the reciprocating direction Q between the base part 22 and the polishing piece 23 and transmit reciprocating power.
is provided between the opposing surfaces of the base portion 22 and the abrasive piece 23, the abrasive piece 23 is formed into a plate shape made of a hard material, an abrasive surface 37 is formed on the lower surface side, and a standing wall portion 36 is formed on the peripheral edge of the upper surface side. drop-off prevention means 39, 49 are provided between the vertical wall portion 36 and the base portion 22, and are elastically deformed in a direction orthogonal to the reciprocating direction Q to prevent the polishing piece 23 from falling off. There is.

[Effect]

The abrasive piece 23 is formed into a plate shape from a hard material, and has an abrasive surface 37 formed on its lower surface, while a standing wall 36 is provided protruding from its upper peripheral edge to prevent it from falling off between the abrasive piece 23 and the base 22. By providing the means 39 and 49, the functions of the upper and lower surfaces (polishing, prevention of falling off) are independent, and the structure of the polishing surface 37 on the lower surface side in particular can be simplified.

Further, the falling-off prevention means 39, 49 are arranged so that the abrasive piece 2
By using a structure in which the abrasive piece 23 is elastically deformed in a direction orthogonal to the reciprocating direction Q between the vertical wall portion 36 of No. 3 and the base portion 22 to prevent the abrasive piece 23 from falling off, the abrasive surface 37 is pressed against the nail surface. The polishing reaction force (in the reciprocating direction Q) and the engagement/disengagement force due to the elastic deformation of the drop-off prevention means 39, 49 do not directly interfere with each other.
Moreover, when the polishing piece 23 is attached, the base part 2
2 and the abrasive piece 23, a transmission part 40 contacts the polishing piece 23 so as to be driven in the reciprocating direction Q, and transmits reciprocating power;
42 is provided between the facing surfaces of the base portion 22 and the polishing piece 23, the polishing piece 23 is prevented from shifting in the reciprocating direction, and the polishing piece 23 is securely attached to the base portion 22. This means that there is no need to set the engagement/disengagement force unnecessarily large, and the engagement/disengagement force can be weakened to the extent that it will not fall off due to its own weight, making it possible to simplify the attachment/detachment operation.

Further, since the polishing piece 23 is attached to and removed from the base portion 22 from below, it is easy to clean and remove nail polishing debris, and even an inexperienced woman or woman can easily handle it.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an electric nail polishing machine according to the present invention, and the main body case 1 of this nail polishing machine includes a cylindrical main body part 2 which also serves as a grip part, and this main body part 2.
It consists of a tapered cover part 3 on one end surface which extends upward from the front part of the cover part 3 with a slight bend, and a polishing part 4 is attached to the lower surface of the cover part 3. Reference numeral 5 denotes a slide switch button, which, when operated with the fingertip of the hand holding the main body 2, causes the polishing piece 23 of the polishing section 4 to reciprocate in the front and rear directions by means of a drive means to be described later.

FIG. 2 shows a cross section of the nail polishing machine, in which 6 is a power supply battery housed in the main body 2, 7 is a power unit consisting of a motor, and 29 is a conductive conductor that slides integrally with the switch button 5. It is a board. Reference numeral 10 denotes a reciprocating drive unit that converts the rotational motion of the power unit 7 into reciprocating motion, and various general conversion structures are used. Next, an example will be described. 8 is a gear driven by the power unit 7. , 11 are gears meshing with the gear 8, and an eccentric cam 12 is mounted on the upper part of the gear 11.
are integrally formed. 13 is a holder having a U-shaped cross section for fixing the gear 11 and the eccentric cam 12; 16 is a reinforcing member for the holder 13; 18
is a drive shaft, and the rear end ring portion 20
is fitted onto the eccentric cam 12. The drive shaft 18 is made of a flexible material such as flexible resin, and has a protrusion 19 at the lower end thereof.
is installed protrudingly. The eccentric cam 12 that rotates in this manner is used to convert the motion into reciprocating motion, but the arrangement and shape of each member are set according to the main body case 1.

In FIG. 3, reference numeral 21 denotes a board-shaped mounting part made of a hard material and mounted on the lower surface of the cover part 3, and a rib 24 is provided protruding from the upper surface of the mounting part 21. By fitting the enlarged upper end part 24a of the rib 24 between the two wire rods 25, 25 attached to the cover part 3, the attachment part 21 is attached to the cover part 3.
It is detachably attached to the lower surface of the main body case 1 to facilitate maintenance and cleaning operations by assembly and disassembly, but it is sufficient if it is provided integrally with one end surface of the main body case 1. Reference numeral 26 denotes a positioning rib, which is located at the tip groove portion 2 of the cover portion 3.
8 is fitted. The abrasive part 4 includes a base part 22 that is attached to the lower surface of the mounting part 21 and is elongated in the reciprocating direction Q, and is separate from the base part 22 and is attached to the lower surface of the base part 22 from below, that is, in the reciprocating direction Q. It consists of an abrasive piece 23 which is elongated in the reciprocating direction and is detachably mounted in the direction orthogonal to Q. Base part 2
2 is mainly composed of an oblong plate body 31 made of a hard material. The main surface 22a and the peripheral edge part 22b of the base part 22 are exposed to the outside while attached to the main body part, and a drop-off prevention means is provided between the peripheral edge part 22b and the vertical wall part 36 on the upper surface side of the polishing piece 23. 39. Reference numeral 33 denotes two locking claws protruding from the front and rear of the upper surface thereof, and two openings 27 and 2 formed in the mounting portion 21.
It is engaged with a receiving part 38 formed in 7. Opening 2
The lengths of the locking claws 7 and 27 in the front and back direction are longer than that of the locking claws 33, so that the locking claws 33 are connected to the openings 27 and 27.
27, the base portion 22 can slide in the front-rear direction, and the sliding movement is caused by the above-mentioned receiving portion 38.
be guided by. Reference numeral 34 denotes a locking portion protruding from the rear portion of the plate body 31, which is connected to the protrusion 1 of the drive shaft 18.
9 is engaged in the recess 34a of the locking portion 34. 4
Reference numeral 5 denotes a rib protruding from the upper end of the plate body 31 and comes into contact with the bottom surface of the mounting portion 21 .

The polishing piece 23 is mainly composed of an elliptical substrate 35 made of a hard material, and a polishing surface 37 is formed on the lower surface thereof by applying an abrasive material, for example.
A base portion 22 is provided at the upper peripheral edge of the polishing piece 23.
A vertical wall portion 36 is provided in a protruding manner to fit and abut on the peripheral edge portion 22b, and its front and rear ends form a circularly curved surface portion 23a. The shape of the polishing piece 23 is symmetrical in the front and rear directions, and the polishing piece 23 can also be attached to the base portion 22 with the front and rear directions reversed. Reference numeral 39 denotes a locking pawl as a means for preventing falling off, which is disposed on the vertical wall portion 36 in the reciprocating direction Q of the polishing piece 23, and is elastically deformed in the central thick portion 41 of the base portion 22 in a direction orthogonal to the reciprocating direction Q. to prevent it from falling off. Reference numeral 40 indicates a protrusion protruding from the center of the upper surface of the polishing piece 23, and reference numeral 42 indicates a recess provided at the center of the lower surface of the base portion 22. The vertical wall portion 36 constitutes a transmitting portion that abuts in the reciprocating direction and transmits reciprocating power.
By abutting on the base portion 22, it is detachably attached to the lower surface of the base portion 22. Polishing part 4
When attached to the lower surface of the attachment part 21 provided on the cover part 3, its tip protrudes forward of the cover part 3 so as to be able to crush the cuticle. A plurality of polishing pieces 23 are prepared with different roughnesses of the polishing surfaces 37, and by changing these pieces as appropriate, rough polishing and finishing polishing of the nail can be performed.

This nail polishing machine has the above-mentioned configuration, and when the main body part 2 is held and the switch button 5 is operated, the drive part 7 rotates and drives the drive part 10, which is attached to the lower surface of the mounting part 21. The base portion 22 is reciprocated in the front-rear direction by the driving portion 10 in its attached state. Therefore, when the lower polishing surface 37 of the polishing piece 23 attached to the lower surface of the base portion 22 is pressed against the claw a, the surface of the claw a is polished. Polished surface 3
The pressing force P (see Fig. 2) applied to the abrasive piece 23 when the abrasive piece 7 is pressed against the claw a is
Since the direction is perpendicular to the reciprocating direction Q of No. 3, that is, the direction in which the polishing piece 23 is attached to the base portion 22 from below, the polishing piece 23
The polishing piece 2 is firmly attached to the base part 22 and does not fall off during nail polishing, and the polishing piece 2
The rattling of No. 3 is also prevented. Also, the polishing piece 23
Even if the abrasive piece 23 is strongly pressed against the claw a, the base part 22 on which the abrasive piece 23 is attached is firmly supported from above by the cover part 3, so the abrasive piece 23
It does not bend or shake unnecessarily, allowing stable nail polishing. Furthermore, since the locking pawl 39 as a means for preventing falling off is arranged on the vertical wall portion 36 so as to be elastically deformed in a direction perpendicular to the reciprocating direction Q of the polishing piece 23, the locking pawl 39 is prevented from being excessively deformed due to the reciprocating movement. There is no elastic deformation, and therefore there is no risk of damage to the locking pawl 39 or reduction in elastic force. Figure 4 shows how the cuticle b present at the proximal end of the nail a is being crushed;
While reciprocating the polishing piece 23 as described above, by pressing the circularly curved surface portion 23a projecting forward of the cover 3 against the linen b, the linen b will be crushed.

[Other Examples]

The present invention can be modified in various ways other than the embodiments described above, some of which will be explained next.

In FIGS. 5a, b, and c, the recess 42 as one of the transmission parts is horizontally elongated, and even if there are manufacturing variations, the protrusion 40 as the other transmission part can be reliably inserted. In this case, in order to prevent the polishing piece 23 from rattling in the reciprocating direction, the width of the recess 42 in the reciprocating direction is made equal to the diameter of the protrusion 42 to reliably transmit reciprocating power. Reference numeral 49 denotes a rattle-preventing rib as a drop-off prevention means protruding from the inner circumferential surface of the vertical wall portion 36, and abuts against the peripheral edge portion of the base portion 22. Even if the concave portion 42 is made horizontally elongated in this way, the horizontal wobbling of the polishing piece 23 is prevented by the rib 49 of the vertical wall portion 36 that abuts the base portion 22.
This prevents it from falling off.

In this way, various shapes and structures can be considered as means for preventing falling off.
Any material may be used as long as it can elastically deform in a direction orthogonal to the reciprocating direction Q between the two and prevent the polishing piece 23 from falling off. Also, in any of the embodiments, the polishing piece 2
If 3 is made to have a symmetrical shape in the reciprocating direction, there is an advantage that it can be installed with the front and back directions reversed without any directionality in the installation direction, and in this way, the tip side, which is often pressed against the claw, can be polished. When the surface becomes worn, the polished surface on the rear end side can be attached to the distal end side, and can be easily attached without considering whether it is facing forward or backward. Furthermore, if the polishing surface 37 is divided into a highly rough polishing surface 37a and a low roughness polishing surface 37b as shown in FIG. 6, rough polishing and finishing polishing can be performed with a single polishing piece 23. It can be carried out. Of course, the above-mentioned detachment prevention means 39 may be provided on the base portion 22, and in this way, the same effects as in the above embodiment can be obtained.

[Effect of idea]

As explained above, according to the present invention, the attachment part 21 provided on one end surface of the main body case 1 is attached to the lower surface of the attachment part 21 from below so as to be able to reciprocate, and in this attached state, the reciprocating drive part 10 inside the main body case 1 The base part 22 is driven in the reciprocating direction Q, and the abrasive piece 23 is detachably attached to the lower surface of the base part 22 from below. The base portion 22 and the abrasive piece 23 are connected to the base portion 22 and the abrasive piece 23.
The abrasive piece 23 is formed into a plate-like shape made of a hard material, and has an abrasive surface 37 formed on the lower surface thereof and a standing wall 36 protruding from the peripheral edge of the upper surface. and the base portion 22, drop-off prevention means 39, 49 are elastically deformed in a direction orthogonal to the reciprocating direction Q to prevent the polishing piece 23 from falling off.
Even if the engagement/disengagement force of the drop-off prevention means 39, 49 between the abrasive piece 23 and the base part 22 is a weak engagement/disengagement force, the pressing force applied to the claw during actual use will remain unchanged on the base. It is used as the attachment force to the part 22, so there is no need to set it higher than necessary, and even inexperienced and weak women and girls can easily attach and detach it. Fatigue damage caused by repeated elastic deformation can also be suppressed. In addition, the polishing piece 23
Since this is attached to and removed from the base portion 22 from below, cleaning and removal of abrasive debris is easy, and it is easy to handle.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
The figure is a perspective view of an electric nail polisher, Figure 2 is a sectional view, Figure 3 is a partially exploded view, Figure 4 is a side view in use, and Figures 5a, b, and c are of other embodiments. A perspective view, a plan view and a sectional view, FIG. 6 is a bottom view showing still another embodiment, and FIG. 7 is a side view of a conventional one. DESCRIPTION OF SYMBOLS 1... Main body case, 4... Polishing part, 10... Reciprocating drive part, 21... Mounting part, 22... Base part,
23 Polishing piece, 36... Standing wall portion, 37... Polishing surface, 39, 49... Falling prevention means, 40, 42...
...Transmission part, Q...Reciprocating direction.

Claims (1)

[Claims for Utility Model Registration] (a) It is attached to the lower surface of the attachment part 21 provided on one end surface of the main body case 1 so as to be able to reciprocate from below, and in this attached state, the reciprocating drive part 10 inside the main body case 1 The base part 22 is driven in the reciprocating direction Q, and the abrasive piece 23 is detachably attached to the lower surface of the base part 22 from below. (b) In this attached state, the base part 22 and the abrasive piece 23 are attached. Transmission parts 40 and 42 are provided between the opposing surfaces of the base part 22 and the abrasive piece 23, and transmit the reciprocating power by contacting them so as to be driven in the reciprocating direction Q, and (c) the abrasive piece 23 is hard (d) A reciprocating motion is provided between the vertical wall portion 36 and the base portion 22. drop-off prevention means 39 that elastically deforms in a direction orthogonal to direction Q to prevent the polishing piece 23 from falling off;
An electric nail polishing machine characterized by: 49.