JPS607653Y2 - rotary electric shaver - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a rotary electric shaver that has an improved hair removal mechanism for removing hair from the rotating inner blade.

Conventionally, as a hair removal mechanism of this type of razor, as shown in FIG.
and a rotating inner cutter 5 as shown in Fig. 6.
Hair extrusion body 5 having a brush 58 that comes into sliding contact with the outer periphery of 2
4 is provided movably in the axial direction of the inner cutter 52.

However, in the one shown in FIG. 5, the spiral blade 55 formed on the outer periphery of the inner blade 50 runs while rubbing the brush 51.
The brush 51 is easily worn out, and the load on the motor (not shown) is large.

Another drawback is that hair particles get stuck in the brush 51 and are difficult to remove.

Moreover, in the one shown in FIG. 6, when the brush 53 is not used, the operation 56 of the brush 53 protrudes to the side, which has the disadvantage that the razor width B becomes large.

Moreover, the removal of hair waste by the hair waste extruder 54 is a manual operation, which is extremely troublesome.

The purpose of this invention is to provide a roll brush parallel to the rotating inner cutter, and to rotate the roll brush while bringing the outer circumferential part of the roll brush into contact with the outer circumference of the inner cutter, thereby solving the above-mentioned drawbacks.

Hereinafter, embodiments of this invention will be described based on the drawings.

In FIGS. 1 and 2, 40 is a main body case that houses a battery (not shown), and 11 is a pedestal provided at the upper end of the main body case 10.

As shown in FIG.
3°13 is formed, and a bearing 14.
14 is fitted and locked so as to be vertically movable.

The bearings 14, 14 are connected to the grooves 13.1 by springs 15, 15.
3 and the upper end 16 of the bearing 14.14.
．． Between 16 and 16, shaft portions 19.19 at both ends of an inner cutter 18 having a spiral cutter 17 formed on its outer periphery are fitted into the grooves 13.13 and supported rotatably.

Reference numeral 20 denotes a roll brush arranged parallel to the lower part of the inner cutter 18, and both ends of the roll brush 20 have shaft portions 21.
21 is rotatably supported at the bottom of a groove 22.22 formed in the bearing 14.14, and its outer periphery is in contact with the outer periphery of the inner cutter 18, that is, the peak of the helical cutter 17.

Reference numeral 23 denotes a lint tray located below the roll brush 20 and provided on the pedestal 11; 24 is a motor supported at the bottom of the pedestal 11; the rotor shaft 25 of this motor 24 is connected to the pedestal 11;
1, and a worm 27 is attached to the protrusion.
has been established.

The worm 27 meshes with a worm gear 29 of a rotating shaft 28 supported on both side walls 12.12 of the pedestal 11.

A belt 30 is provided at one end of the rotating shaft 28, and this belt pulley 30 is connected by a belt 32 to a belt pulley 31 provided on one shaft portion 19 of the inner cutter 18.

Reference numeral 33 denotes a cap fitted onto the base 26 of the pedestal 11. The top of the cap 33 is open, and an arch-shaped outer cutter 35 is supported inside the opening 34 so as to be movable up and down.

The spiral blade 17 of the inner cutter 18 is in contact with the inner surface of the outer cutter 35 due to the elastic force of the springs 15, 15.

In the above configuration, when the motor 24 is driven, its power is transmitted to the inner cutter 18 via the worm 27, the worm gear 29, the belt pulley 30, the belt 32, and the belt pulley 31,
As the inner cutter 18 rotates, the roll brush 20 is smoothly driven by the screw effect of the spiral cutter 17.

Shaving is performed by the rotation of the inner blade 18, and at this time, hair particles adhering to the peaks and troughs of the spiral blade 17 are scraped off or blown off by the roll brush 20, and the inner blade 18
The hair is stored in the tray 23 together with the hair debris directly scattered from the hair.

The inner blade 18 and the roll brush 20 have the same bearings 14, 14.
During shaving, even if the inner cutter 18 is pushed down by overcoming the pressing force acting on the outer cutter 35 or the elastic force of the spring 15.15, the inner cutter 18 and the roll brush 20
The distance between the shafts between the roller brushes 20 and the inner blades 18 changes.
The load on the motor 24 does not increase due to excessive encroachment on the motor 24.

FIG. 4 shows another embodiment of this invention.

According to this, when the rotation of the motor 24 is transmitted to the inner cutter 18 via the spur gears 36.37° 3B and 39, the first
By providing the two spur gears 38 on the shaft portion 21 of the roll brush 20, the rotational force of the roll brush 20 can be obtained.

In this case, the spur gear 38 on the roll brush 20 side and the inner blade 18
The number of teeth of the spur gear 39 on the side is changed to the roll brush 20 and the inner blade 1.
If the circumferential speed of the roll brush 20 is made equal to that of the roll brush 8, or if the roll brush 20 is made to rotate slightly faster, the roll brush 20 will not be cut by the spiral blade 17.

In particular, when the roll brush 20 is rotated faster, the roll brush 20 rubs the spiral blade 17 from the back side of the blade, thus increasing the hair removal effect.

In the configuration shown in FIG. 4, in order to maintain the meshing of the spur gears 36 to 39 and bring the inner cutter 18 into contact with the outer cutter 35, the inner cutter 18, roll brush 20, gear shaft 40, and motor 2
It is necessary to construct the four parts 4 so as to be able to move up and down integrally, and to urge the whole part upwardly by a spring.

According to the present invention as described above, the roll brush 20
The outer periphery of the inner cutter 18 contacts the outer periphery of the inner cutter 18 and rotates.
During use, hair particles adhering to the outer circumferential portion of the inner cutter 18 are automatically removed during rotation of the inner cutter 18, resulting in excellent cleaning workability of the inner cutter 18.

In addition, since the roll brush 20 is rotating, even if hair debris gets stuck in the roll brush 20, the hair debris can be automatically shaken off by centrifugal force.

Moreover, when it comes to removing hair, the roll brush 20
Since the tips of the bristles actively scrape off hair debris adhering to the outer periphery of the inner cutter 18, the effect of removing hair debris adhering to the inner cutter 18 is remarkable.

Further, since the roll brush 20 is rotated in the opposite direction to the rotation direction of the inner cutter 18, even if the outer circumference of the roll brush 20 is in contact with the outer circumference of the inner cutter 18, the roll brush 20 is rotated against the inner cutter. There is no risk of being cut by the 18 spiral blades 17.

Second, frictional resistance between the roll brush 20 and the inner cutter 18 can be reduced, so that wear of the roll brush 20 can be reduced.

Thirdly, the load on the motor can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a rotary electric shaver according to an embodiment of the invention, Fig. 2 is a sectional view taken along line 2-2 in Fig. 1, Fig. 3 is an exploded perspective view of the main parts, The figure is a perspective view showing a modification of this invention, and FIGS. 5 and 6 are front views of main parts of the conventional example. 17... Spiral blade, 18... Inner blade, 20
...Roll brush, 35...Outer blade.

Claims (1)

[Scope of utility model registration request] A roll brush 20 is disposed parallel to the inner blade 18 which rotates with a spiral blade 17 formed on the outer periphery adjacent to the inner surface of the arch-shaped outer blade 35, and the outer periphery of the roll brush 20 is connected to the outer blade 35. The rotary electric shaver is configured to be brought into contact with the outer circumference of the inner cutter 18 and rotated in a direction opposite to the rotational direction of the inner cutter 18.