JPS5820223Y2 - Kaitenshiki Denki Razor - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a rotary electric shaver and eliminates the hair blow-out phenomenon, which was considered to be a serious drawback of the rotary electric shaver.

Some of the outer blades of conventional rotary electric shavers have elongated holes for introducing hair into the periphery of the metal foil of the outer blade with the main purpose of cutting long hair in particular, but hairs having a diameter of about 150 μm are often introduced. The width of the reservoir hole is set to 200 to 300μ.

However, when the inner cutter body is rotated, the whirlpool wind generated causes hair to blow out from this area, causing discomfort to the user.

This invention eliminates these drawbacks; the outer cutter metal foil fixed to the outer cutter holder has a concave part in the center and a protuberance with an arched cross section around the periphery, and the inner hem of the protuberance A slit shear hole is provided in the part, and a filter pore having a diameter that does not allow hair to protrude is provided at the outer hem periphery, and an imaginable line connecting the slit shear hole and the filter pore is The slit shear holes and the filter pores are positioned so as to be parallel to the rotating surface of the disc-shaped inner cutter body in which the inner cutter pieces are vertically arranged.

An embodiment of this invention will be described below with reference to the drawings.

1 is an outer blade metal foil 4 attached to an outer blade holder 2 by a fixing ring 3.
The outer blade metal foil 4 has a concave part 4a in the center.
A raised part 4b having an arch-shaped cross section is provided around the raised part 4b, and a slit shearing hole 5 for shearing long hair is provided at the inner hem of the raised part 4b, and small holes 6, 6, . ... has been drilled.

Further, in the peripheral edge 4C of the outer cutter metal foil 4, filter pores 7.7 having a width narrower than the hair diameter, that is, a hole diameter from which the hair does not protrude, are bored.

The outermost sliding end 8a of the outer inner cutter piece 8 that slides on the inner surface of the outer cutter metal foil 4 slides on the rib 9 inside the inner end 7a of the filter pores 7, 7. It has become.

In the inner cutter body 10 that rotates inside the outer cutter body 1, the outer inner cutter piece 8 is perpendicular to the inner inner cutter piece 11, as shown in FIG. Intermediate inner blade piece 1 arranged in the direction
Three types of inner cutter groups 2 and 2 are mounted so as to be vertically movable, and the orbits of these inner cutter pieces 9, 11, and 12 are configured to overlap with each other.

In this case, the inner cutter piece 11 is adapted to slide under the inner slit shearing hole 5 as shown in FIG. 2, and the long hair is cut at this portion.

In the embodiment of the above structure, the slit shear hole 5 provided at the inner hem of the raised portion 4b, the filter pores 7, 7, . To explain the positional relationship between the slit shear hole 5 and the filter pores 7, 7, . . . , an imaginable line (indicated by a broken line in FIG. In addition, each of the inner cutter pieces 8 is positioned parallel to the rotating surface (solid arrow R) of the inner cutter body 10 with the inner cutter piece 8 vertically protruding from the upper surface thereof, and in this way, the outer cutter and the inner cutter body 10 create a radial flow fan. It consists of

Therefore, when the inner blade body 10 rotates at high speed, a whirlpool wind is generated by the inner blade body 8, but this whirlpool wind is sucked in from the center slit shear hole 5 in the direction of arrow A, and is blocked by the broken line arrow. Hole 5 and filter pore 7゜7...
. . , and is ejected from the filter pores 7, 7, . . .

At this time, since the filter pores 7, 7, . . . are narrower in width than the diameter of the hair, blowing out of hair debris is prevented and only air is released.

In addition, since the swirling wind is rapidly discharged along the above-mentioned imaginable line, the airflow velocity on the side of the slit shearing hole 5, which is the suction side, is increased, and the airflow speed is increased to match the slit-like hole shape. It is possible to actively introduce and cut thin hair.

Of course, the filter pores 7, 7... are better than the slit shear holes.
... is narrow and the amount of air discharged per piece is small, but the filter pores 7, 7... are located on the periphery, that is, on the long side of the circumferential surface, as shown in Figure 1. Since the number of pores can be increased and the air sucked through the slit shear holes can be conveniently discharged, there is no problem.

As described above, according to this invention, the long hair introduction slit shear hole 5 on the central side and the filter pores 7, 7 on the outer peripheral side
By setting the organic position and shape of the inner cutter piece 8 and the inner cutter body 10 that supports the inner cutter piece 8, the outer cutter and the inner cutter constitute a radial flow fan, Long hair or curly hair is introduced and cut by the speed of air flow through the slit shearing hole 5,
In addition, since the filter pores 7.degree. 7 block only hair debris and exhaust air, shearing efficiency can be increased and no hair debris will be scattered.

In the above embodiment, the filter pore 7 is a slit hole, but it goes without saying that this portion may be circular and any shape can be selected.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of this invention, FIG. 2 is a sectional view of the main part thereof, and FIG. 3 is an enlarged perspective view of the main part. 4... Outer blade metal foil, 4a... Concave portion,
4b... Protuberance, 4C... Periphery, 5.
... Slit shear hole, 7 ... Filter pore, 8 ... Inner blade piece, 10 ... Inner blade body.

Claims (1)

[Scope of utility model registration request] The outer cutter metal foil 4 fixed to the outer cutter holder 2 has a concave portion 4a in the center and a raised portion 4b having an arched cross section around the periphery, and a slit shear hole 5 is provided at the inner skirt of the raised portion 4b. At the same time, filter pores 7, 7, .
and the slit shear hole 5 and the filter pores 7, 7...
A rotary electric shaver in which an imaginable line connecting .