JPS597466B2 - electric razor outer blade - Google Patents

Description

[Detailed Description of the Invention] Conventionally, the shape of the hair introduction hole of the outer blade of an electric razor in which the inner blade moves back and forth has been circular, oval, diamond, hexagonal, oblong hexagonal, etc. A pattern in which rectangular or circular holes are arranged continuously has the advantage of a high aperture ratio, but it has the disadvantage that it is difficult to introduce long whiskers, and a pattern in which long hexagonal or oblong holes are continuously arranged has a long opening ratio. Although it is easy to introduce hair, it has the disadvantage that the hair catching rate is poor and shaving cannot be done quickly because the holes are directional.

In view of this, as shown in the drawings, the present application provides waveform reference ribs a, a whose amplitude gradually decreases from both ends toward the center in the longitudinal center of a rectangular thin metal plate e, and A plurality of wavy ribs b are formed in an elliptical shape D by sequentially shifting the amplitude in the vertical direction so that the amplitude f is constant, and the adjacent wavy ribs a, a and a, b and b, b correspond to the rib spacing. The outer cutter E is formed by forming a slit hole d.

The slit holes d are alternately oriented in different directions between each rib, and are inclined so that the included angle is approximately 20 degrees with respect to the reciprocating movement of the inner cutter (not shown). This makes it easier to replenish hair and reduces cutting resistance, allowing for speedy shaving.

C is a hole for attaching to the outer cutter frame formed at both ends of the thin metal plate e in the longitudinal direction.

Since the outer cutter according to the present invention has the above structure, the density of short holes is high in the center and the density of long holes is high in the periphery, making it possible to shave long hairs in the periphery and short hairs in the center. Since long holes and short holes are mixed in every part of the outer cutter, the crossness can be increased no matter which part of the outer cutter is used.Moreover, the corrugated ribs are not all in the same direction, but are aligned in the center. The shape of the contact between the outer cutter and the skin is elliptical, but it matches the distribution shape of the same amplitude portion of the wave ribs in the outer cutter of the present invention, so it has strong mechanical strength. It has an excellent effect that allows you to shave quickly.

[Brief explanation of drawings]

The drawings show an example of the present invention; FIG. 1 is a plan view showing the structure of the corrugated ribs, and FIG. 2 is a plan view of the finished product. Explanation of symbols for main parts: e is a thin metal plate, a is a corrugated reference rib, b is a corrugated rib, and d is a slit hole.

Claims (1)

[Claims] 1. A waveform reference rib is provided in the longitudinal center of a rectangular thin metal plate, the amplitude of which gradually decreases from both ends toward the center.
A plurality of waveform ribs are formed by sequentially shifting the amplitude in the vertical direction of the waveform reference rib so that the amplitude is constant in an elliptical shape,
An outer blade of an electric razor, characterized in that long and short slit holes are formed between adjacent corrugated ribs in accordance with the rib spacing.