JPS588860B2 - Electric razor sotoba - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a reticulated outer cutter for a reciprocating electric shaver.

The net-like outer blade of a conventional reciprocating electric shaver has a number of round holes as shown in Figure 1, or diamond-shaped holes around a hexagonal hole as shown in Figure 2. It is known that the

However, in the case of only round holes shown in the first figure, it is difficult to introduce long whiskers, and in the case of the second figure, the direction of the long holes is not constant, and the long whiskers introduced into the whisker introduction holes are difficult to introduce. When cutting with the inner blade, the cutting angle is not constant and the cutting edge varies depending on the direction of the long hole, which causes problems.

In addition, there is a conventional example in which two types of whisker introduction holes, elongated holes and round holes, are arranged in a mixed manner, but when two different types of whisker introduction holes are combined and arranged, more meat than necessary occurs between the whisker introduction holes. There was a drawback that the width of the rib became large and the aperture ratio of the hair introduction hole became small.

In view of this, the present invention forms a large number of whisker introduction holes between the corrugated ribs in correspondence with changes in the width between the ribs, that is, the corrugated ribs are used as flesh portions constituting the hole ends of the whisker introduction holes. This eliminates the drawbacks of the conventional example described above.

The present invention will be explained below based on the illustrated embodiments.

In A, a large number of corrugated ribs a are provided at appropriate intervals on a thin metal plate 1 made of stainless steel, etc., and the corrugated ribs are adjusted to correspond to the change in the width l between the ribs, that is, the corrugated ribs are adjusted to the hole length. It is a net-like outer cutter in which a large number of whisker introduction holes b are formed at appropriate intervals as the end of the hole in the direction, and the cutter is disposed at the top of the main body 3 in which the drive source is built in through the attachment hole 2 provided at the edge. A reciprocating electric shaver C is constructed by disposing the reciprocating electric shaver C in an arc shape on the upper surface of the reciprocating inner cutter 4 so as to be in sliding contact with the inner cutter 4.

The whisker introduction holes b are inclined with respect to the outline of the net-like outer cutter A, and form a constant angle with the cutting edge of the inner cutter 4.

Further, the whisker introduction holes b may be formed using either a mechanical processing method such as sheet metal mold processing or a chemical processing method such as corrosion.

5 and 6 show different embodiments of the net-like outer cutter according to the present invention. FIG. The figure shows an example in which the wavy ribs a themselves are inclined with respect to the outline of the net-like outer cutter A, and are provided at an angle with the inner cutter 4.

7 to 12 show modified examples of the wavy ribs, and FIG. 7 is an example in which the wavy ribs are so-called sine waves and the phases of adjacent wavy ribs a1 and a2 are shifted by about 180 degrees.

FIG. 8 is an example in which the phases of the waveform ribs of the sine wave are sequentially shifted by about 300 degrees, similar to FIG. 7.

FIG. 9 shows an example in which adjacent waveform ribs aHa2 having different amplitudes, phases, and angular velocities are alternately arranged.

Fig. 10 shows an example in which a straight line is continuously formed by bending it as a wavy rib.

Figure 11 is an example of a waveform rib that changes the angular velocity of a sine wave in the X-axis direction.

FIG. 12 is an example of a waveform rib in which the amplitude of a sine wave is changed in the X-axis direction.

As described above, the present invention provides a thin metal plate with a plurality of wave-shaped ribs at appropriate intervals, and the wave-shaped ribs are used as the hole ends in the length direction of the hole, and are inclined at a substantially constant angle in the reciprocating direction of the inner cutter. It is characterized by the fact that elongated whisker introduction holes, which keep the angle of the whiskers constant, are formed at intervals between adjacent corrugated ribs. Since a large number of hair introduction holes are formed correspondingly, the width of the ribs around the short holes and the rib width around the long holes can be made almost the same, and therefore the aperture ratio of the hair introduction holes can be increased without compromising strength. Both large, short and long beards can be introduced and cut efficiently, and the longitudinal direction of the introduction hole for each type of beard can be tilted in a fixed direction with respect to the inner blade that slides back and forth. The cutting angle between the hole and the inner blade can all be made constant, making it possible to obtain an outer blade that is uniformly sharp over the entire surface.

[Brief explanation of drawings]

1 and 2 are plan views of a conventional mesh outer cutter, FIG. 3 is a plan view of a mesh outer cutter according to the present invention, and FIG. 5 and 6 are plan views showing different embodiments of the reticulated outer cutter according to the present invention, and FIGS. 7 to 12 are perspective views of the reticulated outer cutter according to the present invention. It is an explanatory view showing a modification example of a wave-shaped rib. Explanation of symbols for main parts: 1 is a thin metal plate, a is a corrugated rib,
b is the whisker introduction hole, A is the reticulated outer blade.

Claims (1)

[Claims] 1. A plurality of corrugated ribs are provided at appropriate intervals on a thin metal plate, and the corrugated ribs are used as the hole ends in the length direction of the hole, and are also inclined at a substantially constant angle in the direction of reciprocating movement of the inner cutter to form a bevel angle. An outer blade for an electric shaver, characterized in that constant elongated hair introduction holes are formed at intervals between adjacent corrugated ribs.