JPS6148389B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention forms a disc-shaped inner cutter body by overlapping an outer outer cutter and an inner outer cutter, and the circumferential direction (inner cutter rotation direction) of the outer outer cutter and the inner outer cutter. This relates to the outer blade of a rotary electric razor that allows the dimensions of the blade hole to be varied by minutely changing the relative position of the blade. The purpose is to make the change the same across all blade holes.

1 and 2 show a conventional rotary electric razor outer blade to be compared with the present invention, in which numeral 1 is a disk-shaped outer cutter, and an oblong blade hole radially extends from the center 2. 3, 3... are drilled. Reference numeral 4 denotes a disc-shaped inner and outer cutter having cutting holes 5, 5, . The outer cutter 1 and the inner outer cutter 4 form an outer cutter, and although not shown, the rotating inner cutter slides into contact with the inner and outer cutters 4, making it possible to cut the whiskers penetrating through the cutter holes 3 and 5. do.

In such a conventional rotary electric razor outer blade, when the relative position in the circumferential direction of the inner outer cutter 4 and the outer outer cutter 1 is changed with the center 2 as the center of rotation, the amount of change in the blade hole near the center 2 ( △B1) is small and the amount of change in the blade hole at a position far from the center 2 (△B2)
It was found that the amount of protrusion of the skin X that protruded from the blade hole was different, and that it was difficult to adjust the amount of irritation that the inner blade touched the skin.

In view of the above drawbacks, the present invention seeks to provide an electric razor outer blade in which when the blade hole is changed, the amount of change in the amount of protrusion of the skin in all the introduction holes is approximately the same. The present invention will be explained according to the embodiment shown in FIGS. 3 and 4.

In the figure, 1...outer outer cutter, 4... inner outer cutter indicate the same elements as in the conventional example. However, both the outer outer cutter 1 and the inner outer cutter 4 have slit holes 30 and 5 that are long in the radial direction and narrow in the circumferential direction at positions near the center 2.
A slit hole 3 in which the length in the radial direction becomes shorter and the width in the circumferential direction becomes larger as it approaches the outer periphery.
0.50 is formed. When the two outer cutters 1 and the inner outer cutters 4 are overlapped and rotated by a small angle in the circumferential direction to shift the blade holes 30 and 50, the closer to the outer periphery the larger the change in the slit width becomes. However, since the width dimension of the slit hole near the outer periphery is originally large, the change ratio of the slit hole is almost the same, and the amount of skin protrusion changes almost the same for the slit hole near the center and the slit hole near the outer periphery. This means that no matter which part of the outer blade you press your skin against, you can get the stimulation adjustment effect. The rotary electric razor outer blade 6 forms an electric razor as shown in FIG.

As described above, in the outer blade of the rotary electric razor of the present invention, the length of the blade hole in the radial direction gradually decreases as it goes from the center to the outer periphery of the outer blade body, and the width in the circumferential direction decreases. Since the blade holes are arranged such that the blade gradually widens, the amount of skin protruding from all the blade holes can be controlled to be approximately constant even if the outer cutter and the inner outer cutter are shifted. , skin irritation can now be adjusted.

[Brief explanation of the drawing]

FIG. 1 is a partially enlarged plan view showing a conventional rotary electric razor outer blade in comparison with the present invention, and FIG. 2 is a sectional view taken along cutting line AA of the same. FIG. 3 is a partially enlarged plan view showing an outer blade of a rotary electric razor according to an embodiment of the present invention, and FIG. 4 is a sectional view taken along cutting line BB of the same. FIG. 5 is a perspective view of an electric razor using a rotary electric razor outer blade.

Claims (1)

[Claims] 1 The outer outer cutter and the inner outer cutter are overlapped to form a disc-shaped outer cutter body, and the relative positions of the outer outer cutter and the inner outer cutter in the circumferential direction (rotation direction of the inner cutter) are slightly changed to form the blade hole. In a rotary electric razor outer blade with variable dimensions, the length of the blade hole in the radial direction becomes gradually shorter and the width in the circumferential direction gradually becomes wider as you go from the center of the outer blade body to the outer periphery. The outer blade of a rotary electric razor is characterized by having a blade hole arranged in such a way that the outer blade is shaped like a blade.