JP2000000382A - Electric shaver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a using feeling by clarifying a functional share of a roughly shaving head and a finish shaving head by covering the outer blade surface of the finish shaving head with a coating film in an electric shaver with the roughly shaving head having a thick outer blade thickness and the finish shaving head having a thin outer blade thickness. SOLUTION: In the head part 2 arranged above a reciprocating electric shaver main body, quadruple shaving blade heads are arranged in an outer blade case 6. That is, arch-shaped outer blades 7 and 8 and inner blades 9 and 10 of two rows are arranged in the center, and rectangular outer blades 11 and 12 and inner blades are arranged on both sides. In this case, the roughly shaving outer blade 8 is formed by electrocasting nickel, and the thickness T is set to about 45 to 55 μm. While, the finish shaving outer blade 7 is also formed by electrocast nickel similarly to the roughly shaving outer blade 8, but the thickness is thinly formed as about 25 to 35 μm. In this finish shaving outer blade 7, both the obverse and reverse are covered with a coating film composed of a hard film of TiN and TiC in a thickness of about 0.1 to 2 μm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric shaver.

[0002]

2. Description of the Related Art Conventionally, an electric razor having a plurality of blade heads having different outer blade thicknesses has been disclosed in Japanese Utility Model Publication No.
The thing disclosed by 101,569 gazettes is known.
The electric razor disclosed in this publication is a reciprocating electric razor in which blade heads are provided in two rows or three rows, and one of these rows is a finishing shaving head having a thin outer blade,
The remaining one or two rows share the function as a rough shaving head having a large outer blade thickness.

[0003] Such an electric razor in which the outer blade has a different thickness can be used to cut a beard or a long beard with a rough shaving head and then perform a deep shaving with a finishing shaving head. There is a feature that a deep shave can be performed in a short time with no shaving left.

[0004] However, if the thickness of the outer blade is extremely thin, the outer blade will be worn and easily broken during a long period of use, or if the outer blade is strongly pressed against the skin, the outer blade will be deformed. May be more easily damaged.

For this reason, in the finishing shaving head, even if the thickness of the outer blade is reduced to perform deep shaving, the thickness of the outer blade is sufficiently reduced from the viewpoint of the durability and life of the outer blade. Can not do. As a result, although the thickness of the outer blade of the finishing shaving head is thinner than that of the rough shaving head, no clear change can be provided, and it is difficult for a user to feel the change in thickness.

Therefore, it is not possible to clarify the difference in function between the rough shaving head and the finishing shaving head. As a result, it is difficult to use the head properly for each function, and the rough shaving head is used for finishing shaving. Or you ca n’t shave deeply,
In addition, the head for finishing shaving may be used for rough shaving, resulting in unshaved portions. Further, there is also a case where the finishing shaving head is strongly pressed against the shaving head, for example, at the time of rough shaving without noticing an erroneous use, thereby damaging the finishing shaving head.

[0007]

Therefore, the present invention provides
The thickness of the outer blade of the rough shaving head is made clearer by reducing the thickness of the outer blade of the rough shaving head while maintaining durability. As a result, the rough shaving head and the finishing shaving head are thinned. To provide an electric razor that can further clarify the division of functions with the electric razor.

[0008]

An electric razor according to the present invention has a plurality of blade heads having different outer blade thicknesses, and one of the blade heads is a rough shaving head having a large outer blade thickness. An electric razor in which the other blade head is a finishing shave head having a thin outer blade thickness, characterized in that a coating film is coated on the outer blade surface of the finishing shave head.

The coating film coated on the outer blade surface of the finishing shave head has a higher hardness than the coating film coated on the outer blade surface of the rough shave head.

[0010]

Embodiments of the present invention will be described with reference to the drawings. The reciprocating electric shaver shown in the drawing comprises a main body 1,
It comprises a head 2 provided on the upper part of the main body 1.
The main body 1 includes a driving battery, a motor, and driving components such as a vibrator for converting the rotation of the motor into reciprocating motion. A power switch 3 that can be slid up and down on the surface of the main body 1 and an openable / closable trimmer blade 4 are provided on the surface opposite to the power switch 3.

On the other hand, the head section 2 is provided with an outer blade frame 5 and an outer blade case 6 detachably provided on the outer blade frame 5. The outer blade case 6 is provided with four shaving blade heads, and has two rows of arch-shaped outer blades 7, 8 and inner blades 9 in the center.
10, and rectangular outer blades 11, 12 and an inner blade are provided on both sides thereof. The outer blade case 6 is provided with a cap 13 for protecting the blade.

The arch-shaped outer blade 7 is provided so as to protrude higher than the outer blade 8, and can be sunk deeply by being pressed by the skin during shaving. The inner cutters 9, 10 are held in the outer cutters 7, 8, and when the outer cutter frame 5 is removed from the main body 1 and the outer cutter case 6 is further removed from the outer cutter frame 5, the outer cutter case On the 6 side, the outer blade can be removed together with the outer blade. When mounted on the main body 1, it is connected to a drive shaft protruding from the main body to perform reciprocating drive.

The rectangular outer blades 11 and 12 provided on both sides of the arch-shaped outer blades 7 and 8 have slit holes so that a beard or a long beard can be cut. Although not shown, rectangular inner blades along the inner surfaces of the respective outer blades are previously provided in the rectangular outer blades 11 and 12.

The arch-shaped outer blades 7, 8 have a number of whiskers. Ribs are respectively arranged between adjacent whiskers introduction holes to form one continuous outer blade. The arch-shaped outer blades 7, 8 use the protruding outer blade 8 for rough shaving and the other outer blade 7 for finishing shaving. For this reason, the outer blade 7 for finish shaving is made thinner than the outer blade 8 for rough shaving so that deep shaving can be performed.

FIG. 4 is an enlarged sectional view of the ribs of the outer blade 8 for rough shaving and the outer blade 7 for finishing shaving.
The outer blade 8 for rough shaving shown in FIG. 4 is obtained by electroforming nickel, and the thickness T of the outer blade 8 for rough shaving is about 45 to 55 μm.
It is. The outer cutter 8 is not coated with a coating film. The outer cutter 8 for rough shaving cannot be deeply shaved because of its large thickness. However, by forming slits in the holes formed between the ribs, it is necessary to introduce a beard or a long beard and cut it short. Can be.

On the other hand, the outer blade 7 for finishing shaving shown in FIG. 4 has a coating film 14 coated on the front surface and the back surface of the outer blade 7. The outer blade 7 for finishing shaving is formed by electroforming nickel in the same manner as the outer blade 8 for rough shaving, and the outer blade 7 has a thickness of about 25 to 35 μm. On the other hand, the thickness a of the coating film 14 is about 0.1 to 2 μm, which is sufficiently smaller than the thickness of the outer blade. The material of the coating film 14 is TiN,
Hard films such as TiC, TiCN, ZrN and diamond-like carbon films have been selected.

These hard films reinforce the outer cutter 7, and the thickness of the outer cutter 7 can be reduced accordingly. Therefore, even if the thickness of the outer cutter 7 is reduced to about 25 to 35 μ, the strength of the outer cutter can be maintained, and as a result, the difference in thickness between the outer cutter 8 and the outer cutter 8 for rough shaving is clarified. Can be.

Further, although the outer blade for finishing shaving is thinner than the outer blade for rough shaving, since the outer blade for finishing shaving is reinforced by the hard film, it is compared with the outer blade for rough shaving. However, the strength is not inferior. Therefore, there is no variation in durability and life between the outer blade for rough shaving and the outer blade for finishing shaving. As a result, when the outer cutter case 6 is replaced as one part, at the time of replacement, both outer cutters are uniformly degraded, and the life of the other is reached even though one of the cutters is usable. It is very economical without having to replace it.

The surface of the outer blade 8 for rough shaving can be coated with a coating film. The coating film applied to the outer blade 8 for rough shaving is a material having a soft decorative effect such as gold plating or platinum plating, or a material for improving slip. Since the outer blade for rough shaving has a large thickness and sufficient strength, it is not possible to cover the high-hard film applied to the outer blade for finishing shaving described above. If the strength of the outer blade is increased more than necessary, the elasticity and deflection deteriorate, and when the outer blade is curved in an arch shape, it becomes difficult to follow the inner blade,
This is because there is a problem that adhesion to the inner blade is deteriorated, and there is a problem that even if the skin is pushed by the skin during use, the skin is not deformed or damaged without being bent.

Further, as shown in FIG. 4, the hard film applied to the outer blade for finishing shaving may be applied to both the front surface and the rear surface of the outer blade. And can be applied only to the surface.

[0021]

According to the present invention, the thickness of the outer blade of the rough shaving head is made clearer by reducing the thickness of the outer blade of the finishing shaving head while maintaining durability. As a result, the function sharing between the rough shaving head and the finishing shaving head can be further clarified. For this reason, the user can surely perform rough shaving such as cutting of a whisker with the rough shaving head and perform deep shaving with the finishing shaving head, thereby obtaining a clear feeling of use. Further, the finish shaving head can be made thinner than before, and a deeper shaving can be performed.

Further, although the outer blade for finishing shaving is thinner than the outer blade for rough shaving, since the outer blade for finishing shaving is reinforced by the hard film, it is compared with the outer blade for rough shaving. However, the strength is not inferior. Therefore, there is no variation in durability and life between the outer blade for rough shaving and the outer blade for finishing shaving. As a result, both blades are stored as one unit in the outer blade case, and when this outer blade case is replaced, both outer blades are deteriorated without variation at the time of replacement,
Even if one of them is usable, there is no need to replace both because the life of the other has expired, which is very economical.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an electric shaver of the present invention.

FIG. 2 is an exploded perspective view of a head portion of the electric shaver of the present invention.

FIG. 3 is a perspective view showing a state where the trimmer of the electric shaver of the present invention is opened.

FIG. 4 is an enlarged sectional view of a main part of an outer blade for rough shaving and an outer blade for finishing shaving.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Head part 3 Power switch 4 Trimmer blade 5 Outer blade frame 6 Outer blade case 7 Outer blade for finishing shave 8 Outer blade for rough shave 14 Coating film

Claims (2)

[Claims] 1. A plurality of blade heads having different outer blade thicknesses, wherein one of the blade heads is a rough shaving head having a large outer blade thickness, and the other blade head is a finish having a small outer blade thickness. An electric razor for use as a shaving head, wherein a coating film is coated on the outer blade surface of the finishing shaving head. 2. A coating film having a higher hardness than a coating film formed on the outer blade surface of the rough shaving head on the outer blade surface of the finishing shaving head. Electric razor.