JPS58188482A - Production of inside cutter 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 The present invention relates to a method of manufacturing an inner cutter blade for use in an electric shaver.

As is well known, electric razors have a porous outer cutter blade that comes into direct contact with human skin, and a stainless steel inner cutter blade that moves inside the outer cutter blade while touching the inner surface of the outer cutter blade. is used, but
Among these cutter blades, the inner cutter blade has the disadvantage that it is rarely cleaned after each use, and is susceptible to corrosion or rust due to metal ions and bacterial adhesion.

The present invention aims to provide a method for manufacturing an inner cutter blade that can eliminate these drawbacks.

The method of the present invention will be explained below with reference to the attached drawings.The method of the present invention first includes a first step of making a base piece 1 of a predetermined cutter blade shape from aluminum as shown in FIG. The second step is to anodize the blade to make the entire porous alumite blade piece 2 as shown in Fig. 2, and the alumite blade piece 2 not obtained in this process is converted into a photocurable resin liquid example as shown in Fig. 3. The third step is to form a coating 3 with an ultraviolet curable resin liquid, and after this step, the coating of the photocurable resin liquid is cured by light irradiation, thereby forming the surface of the alumite blade 2 as shown in FIG. It is characterized by having a fourth step of forming a reinforcing outer layer 4 on the outer layer 4, and the physical strength of the alumite cutting edge 2 is increased by the 10Nc reinforcing outer layer 4 as well as increasing the corrosion resistance T6 by the He alumite cutting edge 2. The reinforced outer layer 4 is reinforced by the fine holes formed in the alumite blade piece 2.
This is to prevent the peeling off.

The base piece produced in the first step above may be manufactured by stamping, for example. In this case, the base piece 1 includes a base part 11 that is held by a holder 5 during use, and a blade that protrudes from the holder 5 and is exposed. The portion 12 is molded as one piece.

The anodizing treatment in the second step may be carried out by known means, and in this case, the thickness of the base piece % 0.
If it is made as thin as 1111, the micropores 21 created by the anodizing process will penetrate through the alumite blade 2 and form a "C" 6, and the coating 3 of the photocurable resin will be applied to the alumite blade as shown in FIG. 2, and therefore the reinforcing outer layer 4 obtained by curing this has the advantage of firmly adhering to the alumite blade piece 2. The coating 3 in the third step is formed by adding alumite to the photocurable resin liquid. It may be formed by dipping the blade piece 2, or it may be formed by applying a photocurable resin liquid to the alumite blade piece 2.

In either case, the coating 3 is usually formed into a ladder that covers the entire alumite blade piece 2, but in some cases it may cover the base of the alumite blade piece 2 corresponding to the base 11 of the base piece 1. It is not necessary to form the coating 3 on 22,
Therefore, for example, when the alumite blade piece 2 is immersed in a photocurable resin liquid using a jig, the base 22 of the alumite blade piece 2 is gripped by the jig, and the alumite blade piece 2 is immersed in the resin liquid. It can be immersed inside.

That is, the reinforcing outer layer 4 may be formed at least on the blade portion 23 of the alumite blade piece 2, and in this case, the reinforcing outer layer 4 may be formed on the base fB22.
is inserted and held in the holder 5, and is protected by the holder 5 from external impact forces.

In the fourth step, the coating 3 is irradiated with ultraviolet rays to form a hard reinforcing outer layer 4.
In this case, a large number of alumite blade pieces 2 may be irradiated with the beam of light all at once, or a large number of alumite blade pieces 2 that are continuously moved one after another may be irradiated in sequence at one location.

The blade edge multilayer portion 4 of the reinforcing outer layer 4 obtained in this process is:
(Electric force) It may be possible to remove the cutting before installing it in the razor, but in reality, the inner force tartar blade does not require such cutting due to the force applied to the outer cutter blade. Also, at the beginning of use, the blade end multilayer portion 41 is abraded and ground by the outer cutter blade, and the cutting edge of the internal alumite blade piece 2 is exposed.

Since the method of the present invention forms the reinforcing outer layer 4 of photocurable resin on the alumite blade piece 2, the following effects can be obtained.

The alumite blade piece 2 has high hardness, so it can be used as an inner cutter blade, and it has extremely good corrosion resistance, so it is not only more hygienic than conventional stainless steel cutter blades, but also has a much longer lifespan. Become. .

The reinforcing outer layer 4 includes the micro holes 2 of the upper C alumite blade piece 2.
1, the reinforcing outer layer 4 is firmly adhered to the alumite blade piece 2, thereby effectively preventing the reinforcing outer layer 4 from peeling off.

[Brief explanation of the drawing]

FIGS. 1 to 4 are explanatory diagrams showing step-by-step the steps of the method of the present invention. In the figure, 1 is a base piece, 2 is an alumite blade piece, 21 is a micro hole, 2
2 is a base, 23 is a blade, 3 is a coating made of a photocurable resin liquid, and 4 is a reinforcing outer layer. Patent applicant: Cubic Engineering Co., Ltd. Agent: Seiji Matsuda 11,... 1 Figure 3 Figure 4-47]

Claims (1)

[Claims] A first step of making a base piece with a predetermined cutter blade shape using aluminum as a material, a second step of making a porous alumite blade piece by anodizing the base piece, and at least a blade of this alumite blade piece. A third step of forming a film of a photocurable resin liquid on the part, and a fourth step of curing the film by light irradiation after this step, thereby obtaining a reinforcing outer layer. Electric force) Method for manufacturing the inner cutter blade of a razor.