JPS61268285A - Outer blade of electric razor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an outer blade of an electric shaver for cutting beards and the like.

(Background technology) As shown in Japanese Patent Publication No. 48-44092, an electric razor blade has an inner blade and an inner blade base integrally formed of glass, and the convex surface of the inner blade is covered with an all-metal thin layer. Although it is already well known, considering the structure in which the outer cutter and the inner cutter blade are in sliding contact, in the case of a reciprocating cutter with a thin outer cutter, the pressure on the outer cutter is reduced by the inner cutter. Since the blade and the inner cutter base are held by the inner cutter block, the inner cutter blade and the inner cutter base require considerable rigidity, but in the above known example, the inner cutter block is made of plastic. In addition, since the sliding contact surface of the inner blade with the outer blade is in constant sliding contact, it is thought that it will wear out faster than the sliding contact surface of the outer blade. In this example, since a thin film is formed on the V-side of the inner blade, there is a drawback that the thin film may peel off or wear out.

However, 1. In the case of a rotating blade, the outer blade is almost a rigid body, so
Although the inner blade is not directly subjected to external force, it constantly vibrates and repeatedly collides with the inner surface of the outer blade due to the minute deformation of the outer blade, so it is not possible to completely form a thin film on the inner blade as in the known example. 0 (Objective of the Invention) The present invention has been proposed in view of the above-mentioned points, and its purpose is to improve the inner blade by making the outer blade material itself a synthetic ISI oil material. An object of the present invention is to provide an outer blade for an electric shaver that absorbs minute vibrations generated by interference with the electric shaver and reduces noise.

In addition, a cutting edge is formed on the outer blade material, and only the area around the cutting edge is coated with a coating that is harder than the outer blade material, so the outer blade material itself is exposed on the outer blade surface. , when the outer blade surface comes into contact with the skin due to the synthetic resin material,
The purpose is to provide an electric razor outer blade that does not give a cold feeling like metal.

Furthermore, the synthetic resin material on the surface of the outer blade can be colored in a variety of colors, and it is an object of the present invention to provide an outer blade of an electric shaver from which a desired color can be arbitrarily selected.

(Disclosure of the Invention) Figures 1(a) to rt show a first embodiment in which the present invention is applied to a reciprocating electric shaver. In these figures, 1 is an outer blade of an electric shaver in which a large number of blade holes 1a are formed, and a flexible flat thin film sheet is bent into an inverted U-shape with respect to the outer blade frame 2. can be installed. The thickness of the outer blade 1 is very thin, less than 50 μm, and the outer blade 1 is made of synthetic resin material, and is particularly flexible so that it can be layered closely against the rigid inner blade 3. I'm picking it up.

Therefore, in this outer cutter 1, the outer cutter material is made of a material with good moldability such as plastic such as polyacetal or ABS, and the periphery of the cutting edge 1b that makes sliding contact with the inner cutter blade 3 is made of titanium. A cover is provided in which a thin film is made of a metal or ceramic having excellent wear resistance, or a fluororesin which is harder than the outer blade material such as Teflon.

The processing method is to make a blade hole 1ai in a thin film sheet-shaped outer blade material, or to form a molded material and coat it with the above-mentioned material from the inner surface of the outer blade to form a coating [1c'. .

In the map, 4 is a housing on which the outer cutter frame 2 is attached, 5 is a motor housed in the housing 4, and an eccentric cam 6 is provided on the motor shaft 5a. The eccentric shaft 6a is connected to a drive section 7 having a pair of elastic legs 7a that convert eccentric motion into reciprocating motion. A driving part 7b is provided in the upper center of the driving part 7, and an inner cutter base 9 is provided on the upper part of the drive part 7b via an inner cutter mounting part 8. A large number of inner cutter blades 3 are provided which are in sliding contact with the inner surface of the outer cutter 1.

When in use, by driving the motor 5, its rotational motion is converted into reciprocating motion via the eccentric cam 6, drive unit 7, etc., so that the inner cutter blade 3 provided on the inner cutter base 9
moves back and forth.

Therefore, the hairs (not shown) introduced into the blade hole 1a form a coating 1cf on the cutting edge 1b and the inner blade 3.
It is cut by a blade made of.

In this case, since the outer cutter material itself constituting the outer cutter 1 is a synthetic resin material, it is possible to absorb minute vibrations generated by interference with the inner cutter blade 3 and reduce noise.

Mayu, since the outer blade surface that comes into contact with the skin is made of synthetic resin,
It is easy to use and does not feel cold like metal when it comes in contact with the skin.

Regarding the sharpness of the whiskers, since the periphery of the cutting edge 1b is coated with a highly hard material, it is possible to obtain the same sharpness as that of conventional blades made only of metal.

FIG. 2 shows a second embodiment of the present invention. In this embodiment, the outer blade 1' of a rotary electric shaver is made of a synthetic resin material, and the cutting edge lb' is Coating 1c
The outer cutter base 1d is also integrally formed of a synthetic resin material.

The operation is similar to that of the first embodiment described above.

As described above, in this embodiment, the outer cutter base portion 1d is made of the same material as the outer cutter 1', and the bottom is shaped at the same time to integrate the outer cutter base 1d, but in the first embodiment, The attachment of the outer cutter 1 and the outer cutter frame 2 or the attachment of the outer cutter 1 to the outer cutter frame 2 can also be applied to a plate.0 Note that 10 is an inner cutter frame, and 11 is an inner cutter attached to the inner cutter frame 10. , 12 pushes up the inner cutter 11 and removes the outer cutter 1
Figure 3 shows a third embodiment of the present invention applied to the outer blade 1'' of a hair clipper blade.
In this case, the material of the comb-shaped outer blade 1'' as a fixed blade fixed to the fixed plate 13 is made of a synthetic resin material, and the cutting edge 1 is in sliding contact with the inner blade 14 as a movable blade.
The portion b" is covered with a film IC".

Note that the fixed plate 13. It is also possible to integrally form the outer blade 1'' with the same material as in the second embodiment.
16 is a guide plate, and 16 is a push-up spring that presses the inner cutter 14 against the outer cutter 1''.

(Effects of the Invention) As described above, according to the present invention, a cutting edge is formed on an outer blade material made of a synthetic resin material, and a coating having higher hardness than the outer blade material is coated on this cutting edge edge portion. Since the blade is structured, it has the advantage of absorbing minute vibrations generated by interference with the inner blade and reducing noise.

Furthermore, when the outer blade is brought into contact with the skin, there is no feeling of coldness, making it easy to use.

Furthermore, the synthetic resin material that is the outer blade material can be colored in a variety of colors, so you can create your favorite color and have good visibility.
There are advantages such as

[Brief explanation of drawings]

Figure 1 shows the first embodiment of the present invention, in which 0) is a sectional view of the main parts of a reciprocating electric shaver, (B) is a perspective view of the outer cutter according to the present invention, and (C) is (A) in the figure. Figure 2 is an enlarged view of part A of , and shows a second embodiment in which the present invention is fully applied to a rotary electric shaver.
(a) is a half-sectional view of the main parts of a rotary electric shaver, (b)
bald) An enlarged view of part B in the figure, Figure 3 is a third embodiment in which the present invention is applied to a hair clipper blade, (a) is a plan view showing the next state with the cover removed, and (b) is a longitudinal section of the same as above. Figure, (c) is @
) is a sectional view taken along line CC in the figure.

Claims (3)

[Claims] (1) An outer blade for an electric shaver, which is formed by forming a cutting edge on a synthetic resin outer blade material, and coating the cutting edge with a coating that is harder than the outer blade material. (2) The outer blade of an electric shaver according to claim 1, wherein the outer blade material is in the form of a thin film sheet and has flexibility. (3) The outer cutter for an electric shaver according to claim 1, wherein the outer cutter is integrally formed with an outer cutter base that supports the outer cutter.