JPS5912305B2 - electric razor outer blade - Google Patents

Description

[Detailed description of the invention] The present invention relates to an outer blade for an electric razor.

Conventionally, in the outer cutter of this type of electric razor, as shown in FIGS. 1 and 2, the outer cutter 1 on which the inner cutter 2 slides has a certain inclination angle with respect to the sliding direction S of the inner cutter 2. A large number of whisker introduction holes 3 are arranged in a row, and a pair of adjacent rows of whisker introduction holes 3a, 3b are inclined in opposite directions.

However, since the length of the beard introduction hole 3 is constant, the longer the beard introduction hole is, the easier it is to introduce a long beard, but on the other hand, it is difficult to shave the beard short; If the length of the introduction hole is short, the beard can be shaved short, but it is difficult to introduce a long beard.

In addition, since the ribs 4 between the whisker introduction holes become thinner, sufficient strength cannot be provided, and there is a risk of breakage, which is dangerous.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks, and provide an outer blade for an electric razor that has a good cutting quality, can cut long beards and curly beards, and has sufficient strength. be.

The outer blade of the electric razor according to the present invention is constructed to satisfy all of the following requirements.

A. In order to equalize the protrusion of the skin from the hole of the outer blade and stabilize the shave quality, the length of the hole is set in inverse proportion to the width of the hole.For example, when the length of the hole is increased, Make the width smaller.

B. In order to effectively capture whiskers, the inclination angle θ of the whiskers introduction hole 13 with respect to the sliding direction S of the inner cutter is set to 20 as shown in FIG.
Make it at °±10°.

C8<In order to improve the introduction of long whiskers, as shown in FIG.
3" are arranged in a staggered manner. More specifically, the angle of inclination of the other bead introduction holes is 2 with respect to the -
Arrange them alternately so that the angle θ.

D. To ensure sufficient strength, the whisker introduction holes 13 are arranged in a staggered manner as shown in FIG. 5, and the area of the ribs 14 between the whisker introduction holes is made as wide as possible.

E. A long beard introduction hole is effective for introducing long beards, while a short beard introduction hole is effective for shaving short beards, so both beard introduction holes are used together.

F. As shown in FIG. 6, a group of short holes 13a are arranged in the central part 15 where the most pressing force is applied to the skin.A group of elongated hair introduction holes 13b is arranged around the group of short holes 13a.

FIG. 7 shows a specific embodiment of the present invention,
In the outer cutter 11 of this embodiment, a large number of whisker introducing hole groups 13a having a wide width and a short length are arranged in an elliptical region 15a in the central portion 15, and the central portion 15 has a wide width and a short length. A group of whisker introducing holes 13b having a narrow width and a sufficient length are arranged so as to surround the short whisker introducing hole group 13a.

In addition, each whisker introduction hole 13 is 20°±1 with respect to the sliding direction of the inner blade.
They have an inclination angle of 0° and are alternately and continuously arranged in a staggered manner.

Therefore, it is possible to construct an extremely good outer cutter that satisfies all the requirements A to F above.

FIG. 8 shows another embodiment of the present invention, and in this embodiment, compared to the embodiment shown in FIG. The whisker introduction holes 2 are arranged in a strip-shaped region and have narrow widths and elongated whisker introduction holes 2 on both sides thereof.
3b are arranged.

In another embodiment shown in FIG. 9, a group of whisker introduction holes 33a having a short length and a narrow width are arranged in a band-like region throughout the central portion 35, and arranged on both sides thereof are elongated and narrow in width. In the whisker introduction hole group 33b, two whisker introduction holes are arranged in pairs in the same direction, and six pairs of whisker introduction holes are alternately and continuously arranged in a staggered manner.

According to the outer blade of the electric razor of the present invention configured as described above, the amount of skin protrusion can be made constant, and all the hair introduction holes have a suitable inclination angle with respect to the sliding direction of the inner blade, It can effectively introduce curly beards and has sufficient strength.
It achieves effects such as extremely good shaving taste and greatly improved reliability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an electric razor equipped with a conventional outer cutter, Fig. 2 is a partial plan view of the same, Figs. A plan view of one embodiment, FIGS. 8 and 9 are plan views of other embodiments of the present invention, respectively. 11... Outer blade, 13... Mustache introduction hole, 1
3a...Group of whisker introduction holes with wide width and short length, 1
3b... Group of elongated whisker introduction holes, 15...
Center.

Claims (1)

[Scope of Claims] Other whisker introduction holes are arranged alternately in a staggered manner with respect to the whisker introduction hole 1-, and a group of wide and short whisker introduction holes and a group of narrow and elongated whisker introduction holes. What is claimed is: 1. An outer blade for an electric razor, characterized in that said group of wide-width, short-length beard introduction holes are arranged in the center. 2. The outer blade of an electric razor according to claim 1, wherein a group of whisker introduction holes having a wide width and a short length are arranged in an elliptical shape in the center. 3. The outer blade of an electric razor according to claim 1, wherein a group of wide-width, short-length beard introduction holes are arranged in a band shape in the center.