JPH0669407B2 - Electric nail polisher - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electric nail polisher in which a shock absorbing means is provided to a drive shaft that reciprocally drives a polishing portion.

(Background of the Invention) There are two types of electric nail polishers that drive a polishing portion by a motor or the like to polish the surface of a nail, one that rotates the polishing portion and one that reciprocates. As a reciprocating type nail polisher, the technique disclosed in US Pat. No. 3,240,966 is known. As shown in FIG. 7, this product is constructed by attaching a polishing portion 54 to the tip of a drive shaft 53 driven by a motor 51 and a cam portion 52, and only polishing the nail a by the lower surface of the polishing portion 54. Alternatively, the scab b can be crushed by hitting the tip end thereof against the scab b, but since the drive shaft 53 is a rigid body,
The impact when the polishing portion 54 moved forward and its tip end hits the bast skin b was very painful.

(Object and Outline) The present invention has been made in consideration of the above points, and the present invention can mitigate the impact applied to the scab when the polishing portion moves forward and strikes the scab. The purpose of the invention is to provide an electric nail polisher. To this end, the present invention provides a drive shaft that connects the drive unit that converts the power of the power unit into reciprocating motion and the polishing unit with a long hole formed along the length direction of the drive shaft. The shock absorbing means is added. With this structure, the shock absorbing means absorbs and absorbs the shock applied to the blister when the tip of the polishing portion hits the blister,
It is designed so that the fingertips do not feel pain.

(Example) Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an electric nail polisher according to the present invention. A main body case 1 of the nail polisher has a cylindrical main body 2 that also serves as a grip portion and extends from the front of the main body 2. It is made up of the exposed lid portion 3, and the polishing unit 4 is attached to the lower portion of the lid portion 3.
Is installed. Reference numeral 5 denotes a slide type switch button, which is operated by the fingertips of the hand holding the main body 2 to reciprocate the polishing unit of the polishing unit 4 in the front-back direction by the drive means described later to polish the surface of the nail a.

Next, the detailed structure of the nail polisher will be described with reference to FIGS. 2 (a), (b) and FIG.

The main body portion 2 is formed by mounting the two divided lower cases 2b and 2c on the lower side of the upper case 2a. While the lower case 2b is fixed to the upper case 2a in the assembled state, the lower case 2c is detachably attached to the lower rear side of the upper case 2a.
The lower case 2c serves as a replacement lid for the power supply unit 6 made of a power supply battery, and the power supply unit 6 can be replaced by attaching and detaching the lower case 2c. The covered portion 3 is bent upward from the main body portion 2 so that the polishing portion 23 of the polishing unit 4 can be easily pressed against the nail a, and thus the covered portion 3
The polishing surface 37 of the polishing portion 23 attached to the lower part of the is inclined upward by an angle θ. By inclining the polishing surface 37 in this manner, the polishing surface 37 is held by the nail a while the main body 2 is held in the hand.
Easy to press against the surface of. Further, the covered portion 3 projects from the main body portion 2 in a tapered shape. As the power supply unit, a connection cord connected to an outlet may be provided instead of the battery 6. Reference numeral 7 denotes a power unit composed of a motor, which is mounted on the lower case 2b. Reference numeral 19 is a rib for fixing the power unit.

Reference numeral 10 is a drive unit that converts the rotational movement of the power unit 7 into a reciprocating movement, the details of which will be described below. Reference numeral 8 is a gear connected to the rotary shaft 9 of the power unit 7, and 11 is a gear meshing with the gear 8. An eccentric cam 12 is integrally formed on the top of the gear 11. 13 is a holder for the gear 11 and the cam 12,
The gear 11 and the cam 12 are interposed between the support plates 13a and 13b projecting from the upper and lower parts of the base plate 13a, and the rotary shaft 14 is mounted to assemble. Reference numerals 15 and 15 are screws for fixing the holder 13 to the front surface of the power unit 7, 16 is a reinforcing member for preventing flexural deformation of the support plates 13b, 13b, and 17 is a coil spring for elastic contact.

18 is a drive shaft, and the cam 12
A ring portion 20 is formed so as to be fitted to the. The drive shaft 18 is made of, for example, a flexible material such as a flexible synthetic resin, its tip portion 18a is bent slightly upward, and a projection portion 19 is projectingly provided at a lower portion thereof. In, the drive shaft 18 is inclined at a small angle α with respect to the sliding direction Q of the polishing portion 23. Reference numeral 18b denotes a thin portion formed on the rear portion of the drive shaft 18, which imparts elasticity to the drive shaft 18 in the lengthwise direction and absorbs vertical shake. Reference numeral 18c denotes a shock absorbing means composed of a long hole portion formed in the drive shaft 18 along the length direction thereof, and the polishing portion 23c
When the tip of the drive shaft hits the bast, the drive shaft 18 elastically deforms and absorbs the impact as shown in FIG. 5 (b). Reference numeral 29 is a conductive plate that slides integrally with the switch button 5.

Reference numeral 21 is a fixed substrate made of a hard material that is attached to the lower portion of the covered portion 3, and a rib 24 is provided on the upper surface of the fixed substrate 21 so as to cover the upper end enlarging portion 24a of the rib 24. The board 21 is detachably attached to the lower portion of the covered portion 3 by being fitted between the two wire rods 25, 25 attached to the lid portion 3. Reference numeral 26 is a positioning rib, which is a tip groove portion of the covered portion 3.
Fitted in 28. The polishing unit 4 comprises a sliding member 22 mounted on the lower surface of the fixed base plate 21, and a polishing portion 23 removably mounted on the lower surface of the sliding member 22. Sliding member
22 mainly has an elliptical plate body 31 made of a hard material.
Reference numeral 33 denotes locking claws provided on the front side and the rear side of the upper surface of the locking claw 33, which are attached to the receiving portions 38 formed in the two openings 27, 27 formed in the fixed substrate 21. It Opening 2
The length of 7,27 in the front-rear direction is longer than that of the locking claw 33, so that the sliding member 22 can slide in the front-back direction when the locking claw 33 is attached to the openings 27, 27. And the sliding is guided by the receiving portion 38. Reference numeral 34 is a locking portion that is provided in a protruding manner on the rear portion of the plate body 31, and the projection 19 of the drive shaft 18 is engaged with the recess 34a of the locking portion 34. Reference numeral 45 denotes a rib projectingly provided on an end portion of the upper surface of the plate body 31, which abuts on the bottom surface of the fixed substrate 21.

The polishing section 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. A wall portion fitted to the sliding member 22 is provided around the polishing portion 23.
36 is provided so as to project, and its front end portion and rear end portion are circular curved surface portions 23a. The shape of the polishing section 23 is symmetrical in the front-rear direction and the left-right direction, and the front-rear direction can be reversed to be mounted on the sliding member 22. 39 is a locking claw, 40 is a protrusion, the polishing portion 23, by elastically fitting the locking claw 39 and the protrusion 40 to the thick portion 41 of the sliding member 22 and the recess 42 of the bottom surface, It is detachably attached to the lower part of the sliding member 22. Attach the polishing unit 4 to the covered part 3
In the state of being attached to the, the tip portion thereof protrudes to the front of the covered portion 3 so that the scab b can be pushed. The polishing section 23 is
A plurality of polishing surfaces 37 having different roughnesses are prepared. By appropriately replacing the polishing surface 37, the nail can be roughened or finish-polished.

The nail polisher has the above-described structure, and when the main body 2 is held and the switch button 5 is operated, the power unit 7 is driven and the rotational motion thereof is converted into the reciprocating motion by the drive unit 10. The polishing section 23 connected to the drive section 10 via 18 reciprocates in the front-back direction. When the polishing surface 37 is pressed against the nail a, the surface of the nail a is polished. The pressing force P applied to the polishing portion 23 when the polishing portion 23 is pressed against the claw a is in a direction orthogonal to the reciprocating direction Q of the polishing surface 37, that is, the polishing portion 23 is pressed toward the covered portion 3 side. Because it is a direction
The polishing part 23 does not fall off during the nail polish. Further, even if the polishing portion 23 is strongly pressed against the nail a, the polishing portion 23 is firmly supported by the covered portion 3, the polishing portion 23 is not unnecessarily bent or shaken, and stable nail polishing can be performed. it can. Further, since the polishing surface 37 is bent upward by the angle θ, the nail a
Since the lid portion 3 is tapered and the taper portion 3 is tapered, it is possible to easily visually recognize how the polishing portion 23 polishes the nail from above.

FIG. 4 shows a state in which the scabbard b existing at the base end portion of the claw a is pushed in. While the polishing section 23 is reciprocated as described above, the circular curved surface section 23a causes the scabbard b to move. By plucking, the linseed b can be crushed. Here, when the drive shaft 18 retreats, the drive shaft 18 does not elastically deform in the lengthwise direction (see FIG. 5 (a)), but the drive shaft 18 moves forward and the tip of the polishing portion 23 moves. When it hits the skin b too much, the drive shaft 18
Is elastically deformed by the shock absorbing means 18c (see FIG. 5 (b)), and the shock applied to the linseed b is absorbed and absorbed. In this case, the same shock absorbing effect can be obtained by the thin portion 18b. Further, since the drive shaft 18 is inclined at a small angle α with respect to the sliding direction of the polishing portion 23, the impact applied to the drive shaft 18 deviates from its axial direction, and the drive shaft 18 bends rapidly without any consideration. The impact can be mitigated. That is, the drive shaft 18 is provided with a shock absorbing means also by its own elastic material, and in this case, by slanting a small angle α as described above, a smooth shock can be obtained without a thought point. A buffering effect can be obtained. As a matter of course, the shock absorbing effect can be obtained even if the shaft 18 is only tilted by α degrees as described above without taking measures such as a long hole portion and a thin portion.

(Other Embodiment) FIG. 6 (a) shows another embodiment, in which the engaging portion is
An opening 19a serving as a shock absorbing means is formed in the projection 19 of the drive shaft 18 that engages with the 34, and the shock is absorbed by elastic deformation of the projection 19 (see the chain line in the figure). Further, in the same figure (b), an elastic member 43 is attached to the front portion of the projection 19, and the elastic member 43 absorbs the impact. There are various possible methods for providing the drive shaft 18 with shock absorbing means.

(Effects of the Invention) As described above, the electric nail polisher according to the present invention is
Since the drive shaft 18 that reciprocally drives the polishing portion 23 is provided with the shock absorbing means 18c when the drive shaft 18 moves forward, when the tip portion of the polishing portion 23 is struck against the scab b and crushed. Can absorb the impact and reduce the pain on the linseed.

[Brief description of drawings]

1 shows an embodiment of the present invention. FIG. 1 is a perspective view of an electric nail polisher, FIGS. 2 (a) and 2 (b) are exploded views, FIG. 3 is a sectional view, and FIG. The figure is a partial side view in use, FIGS. 5 (a) and 5 (b) are partial plan views, FIG. 6 (a),
FIG. 7B is a partial sectional view of another embodiment, and FIG. 7 is a partial side view of a conventional one. 1 …… Main body case 2 …… Main body part 3 …… Covered part 7 …… Power part 10 …… Drive part 18 …… Drive shaft 23 …… Grinding part 18c, 19a, 43 …… Shock cushioning means

Claims (1)

[Claims] 1. A power unit 7 and a drive unit 10 for converting the power of the power unit 7 into a reciprocating motion are housed in a main body case 1, and a polishing unit 23 is mounted on the drive unit 10 via a drive shaft 18. An electric nail polisher characterized in that the drive shaft (18) is provided with shock absorbing means (18c) for reciprocating when it is reciprocated.