JPS622928Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric brush that operates by converting rotational motion into reciprocating linear motion.

Conventionally, this type of electric brush used gears and gears (bevel gears, etc.) to convert rotary power into reciprocating linear motion, but in the case of this gear transmission system, first, the reciprocating motion of the brush was The second problem was that the meshing of gears such as gears and pinions caused noise during use.Furthermore, the load on the brush section, that is, the load that hits the teeth during use, was directly In addition to the problem with the motor, the structure of the gear transmission is conspicuously complicated, and it has many drawbacks such as being prone to failure.

The present invention has been devised to eliminate the above-mentioned defects. That is, in the present invention, a reducer 3 is attached to a small motor 2 housed in a cylindrical body 1, and a rotating body 6 having an eccentric pin 5 projecting thereon is attached to the rotating shaft 4 of the reducer 3. An L-shaped arm 7, which is loosely fitted to the eccentric pin 5 and whose other end is loosely engaged to the brush support 8, is pivoted on the inner wall 14 of the slider chamber 13 with a pin 11.

Hereinafter, the present invention will be described in detail with reference to embodiment figures.

In FIG. 1, 1 is a cylindrical main body, and a small motor 2 is housed in the lower part of the cylindrical main body 1. In FIG. Reference numeral 3 denotes a speed reducer, which is attached to the small motor 2, and a rotating body 6 having an eccentric pin 5 projecting thereon is pivotally attached to the rotating shaft 4 of the speed reducer 3. The rotating body 6 is designed to be replaceable with a rotating body having a different diameter, that is, a different eccentric distance, in order to adjust the stroke of the reciprocating motion. Reference numeral 7 denotes an L-shaped arm, and as shown in FIGS. 2 to 5, one end of the L-shaped arm 7 is loosely fitted to the eccentric pin 5, and the other end is fitted to the brush portion support 8.
However, in order to allow the rotary bodies of different diameters used for the above-mentioned stroke adjustment, that is, the eccentric pins 5 protruding at different eccentric positions, to be loosely fitted, one end is provided with a A horizontal long hole 9 is provided at the other end, and a vertical long hole 10 is provided at the other end. 11
12 is a pin to serve as a fulcrum of the L-shaped arm 7, and 12 is an engagement pin protruding from the brush portion support 8. Reference numeral 13 denotes a slider chamber housed in the upper part of the cylindrical body 1, which smoothes the reciprocating linear movement of the brush portion support 8 as shown in FIGS. 2 and 6 to 8. The mold arm 7 is supported by a pin 11 provided on the inner wall 14 of the slider chamber 13 . 15,1
Reference numeral 5 denotes rollers, and in the embodiment, three rollers are disposed in the slider chamber to facilitate smoother reciprocating movement of the brush support 8. 16 is a brush portion.

Now, when a switch (not shown) is turned on and the rotating body 6 rotates via the small motor 2 and the reducer 3, the eccentric pin 5 protruding from this rotates the horizontal long hole 9 of the L-shaped arm 7. The L-shaped arm uses the pin 11 as a fulcrum and transmits rotational motion to the brush section support 8 at the other end by converting rotational motion into reciprocating linear motion, so that the brush section 16 reciprocates smoothly.

The present invention has the above-mentioned configuration, in which a reducer 3 is attached to a small motor 2 housed in a cylindrical body 1, and a rotary body 6 having an eccentric pin 5 protruding from the rotating shaft 4 of the reducer 3 is attached to the rotary shaft 4 of the reducer 3. At the same time, the L-shaped arm 7, which has one end loosely fitted to the eccentric pin 5 and the other end loosely fitted to the brush support 8, is pivoted on the inner wall 14 of the slider chamber 13 with a pin 11. This has made it possible to provide an electric brush that converts rotational motion into reciprocating linear motion without the use of gears. This eliminates the generation of noise such as gear squeaks during use as in the past, giving the user a comfortable feeling of use, and the rotating body with eccentric pins at different distances from the rotation axis. By replacing the rotary body with a rotating body with a different eccentric distance, the stroke of the brush section can be changed, allowing the stroke to be adjusted according to the user's preference, an effect that was completely unimaginable with conventional technology. It can be demonstrated. Furthermore, since the fulcrum of the L-shaped arm can receive the load that hits the teeth during brushing, the negative effect on the motor is reduced, and failures are therefore reduced. Moreover,
Since stress is not applied to each part during operation, there is little mechanical loss, and it is highly durable, making it ideal for toothbrushes, which are essential tools for daily use.

[Brief explanation of the drawing]

The drawings show an embodiment of the electric brush according to the present invention, and FIG. 1 is a front view showing the internal structure;
Fig. 2 is a partially cutaway side view of the same as above, Fig. 3 is a partially cutaway front view of the L-shaped arm, Fig. 4 is a cross-sectional side view taken along line A-A in Fig. 3, and Fig. 5 is the bottom view of Fig. 4. 6 is a cross-sectional view of the slider chamber, FIG. 7 is a side view of the same, and FIG. 8 is a bottom view of FIG. 6. 1... Cylindrical body, 2... Small motor, 3... Speed reducer, 4... Rotating shaft, 5... Eccentric pin, 6... Rotating body, 7... L-shaped arm, 8... Brush part support Pattern, 9
...horizontal hole, 10...horizontal hole, 11...pin, 1
2... Engaging pin, 13... Slider chamber, 14...
Inner wall, 15... roller, 16... brush section.

Claims (1)

[Claims for Utility Model Registration] (1) A reducer 3 is attached to a small motor 2 housed in a cylindrical body 1, and a rotating body 6 with an eccentric pin 5 protruding from the rotating shaft 4 of the reducer 3. Along with attaching the shaft,
The L-shaped arm 7, which has one end loosely fitted to the eccentric pin 5 and the other end loosely fitted to the brush support 8, is pivoted on the inner wall 14 of the slider chamber 13 with a pin 11. electric brush. (2) In the electric brush according to claim 1 of the utility model registration claim, the slider chamber 13 has built-in a required number of rollers 15, 15 for smooth reciprocating motion of the brush portion support 8. An electric brush featuring (3) Utility Model Registration In the electric brush according to claim 1, the rotating body 6 can be freely replaced with a rotating body of a different diameter (different eccentric distance), and the rotating body 6 can be replaced with a rotating body of a different diameter. In order to allow the protruding eccentric pin 5 to fit freely, an elongated hole 9 of a required size is provided at one end of the L-shaped arm 7, and an elongated hole 10 for loosely fitting the brush portion support 8 is provided at the other end. An electric brush characterized by being provided with.